[GMCnet] Onan Remote Wiring
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Carl Stouffer
May 29, 2017, 7:32:04 PM5/29/17
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The past two weekends and evenings in between, I have been swapping out my old, dependable, but high hour Onan Power drawer for a "fully
reconditioned" one that came from Kerry Tandy's coach, through Steve Ferguson. Should be 'plug-n-play' right? Not really. There were several minor
problems with the 'new' one that I spent numerous hours fixing, but the main issue was the remote start wiring.
After hooking it up the way it was originally (I thought), it didn't work. A number of things were not right on the connections to the control board,
but I was able to figure that out from the manual. The next issue was that the color codes on the end going into the coach, were different. With a
lot of help from my son and a multi meter, we finally got it right and everything works the way it is supposed to.
My question concerns the wire that provides power to the Hobbs meter and the switch light. On both generators, this wire had a ring terminal on it
and was connected to the + terminal on the coil. The wiring diagram shows it connected to pin #6 on the control board. Is there a preference on this
connection? It seems to work properly either way, even with the prime circuit.
Thanks,
--
Carl Stouffer
'75 ex Palm Beach
Tucson, AZ.
Chuck Aulgur Reaction Arm Disc Brakes, Quadrabags, 3.70 LSD final drive, Lenzi knuckles/hubs, Dodge Truck 16" X 8" front wheels, Rear American Eagles,
Solar battery charging. GMCSJ and GMCMI member
_______________________________________________
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reconditioned" one that came from Kerry Tandy's coach, through Steve Ferguson. Should be 'plug-n-play' right? Not really. There were several minor
problems with the 'new' one that I spent numerous hours fixing, but the main issue was the remote start wiring.
After hooking it up the way it was originally (I thought), it didn't work. A number of things were not right on the connections to the control board,
but I was able to figure that out from the manual. The next issue was that the color codes on the end going into the coach, were different. With a
lot of help from my son and a multi meter, we finally got it right and everything works the way it is supposed to.
My question concerns the wire that provides power to the Hobbs meter and the switch light. On both generators, this wire had a ring terminal on it
and was connected to the + terminal on the coil. The wiring diagram shows it connected to pin #6 on the control board. Is there a preference on this
connection? It seems to work properly either way, even with the prime circuit.
Thanks,
--
Carl Stouffer
'75 ex Palm Beach
Tucson, AZ.
Chuck Aulgur Reaction Arm Disc Brakes, Quadrabags, 3.70 LSD final drive, Lenzi knuckles/hubs, Dodge Truck 16" X 8" front wheels, Rear American Eagles,
Solar battery charging. GMCSJ and GMCMI member
_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
A.
May 29, 2017, 7:32:23 PM5/29/17
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Carl S. wrote on Mon, 29 May 2017 18:20
--
73 23' Sequoia 4 Sale
73 23' CanyonLands Parts Unit 4 Sale
Upper Alabama
"Every day I become more convinced that I am the only person left on the planet that recognizes nonsense for what it is."
> The past two weekends and evenings in between, I have been swapping out my old, dependable, but high hour Onan Power drawer for a "fully
> reconditioned" one that came from Kerry Tandy's coach, through Steve Ferguson. Should be 'plug-n-play' right? Not really. There were several
> minor problems with the 'new' one that I spent numerous hours fixing, but the main issue was the remote start wiring.
>
> After hooking it up the way it was originally (I thought), it didn't work. A number of things were not right on the connections to the control
> board, but I was able to figure that out from the manual. The next issue was that the color codes on the end going into the coach, were different.
> With a lot of help from my son and a multi meter, we finally got it right and everything works the way it is supposed to.
>
> My question concerns the wire that provides power to the Hobbs meter and the switch light. On both generators, this wire had a ring terminal on
> it and was connected to the + terminal on the coil. The wiring diagram shows it connected to pin #6 on the control board. Is there a preference on
> this connection? It seems to work properly either way, even with the prime circuit.
>
> Thanks,
Pin 6. Everything to the remote panel goes to a board pin. The Onan engineers knew what they were doing. Don't deviate from that.
> reconditioned" one that came from Kerry Tandy's coach, through Steve Ferguson. Should be 'plug-n-play' right? Not really. There were several
> minor problems with the 'new' one that I spent numerous hours fixing, but the main issue was the remote start wiring.
>
> After hooking it up the way it was originally (I thought), it didn't work. A number of things were not right on the connections to the control
> board, but I was able to figure that out from the manual. The next issue was that the color codes on the end going into the coach, were different.
> With a lot of help from my son and a multi meter, we finally got it right and everything works the way it is supposed to.
>
> My question concerns the wire that provides power to the Hobbs meter and the switch light. On both generators, this wire had a ring terminal on
> it and was connected to the + terminal on the coil. The wiring diagram shows it connected to pin #6 on the control board. Is there a preference on
> this connection? It seems to work properly either way, even with the prime circuit.
>
> Thanks,
--
73 23' Sequoia 4 Sale
73 23' CanyonLands Parts Unit 4 Sale
Upper Alabama
"Every day I become more convinced that I am the only person left on the planet that recognizes nonsense for what it is."
Ken Henderson
May 29, 2017, 7:48:12 PM5/29/17
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Carl,
Whether you connect to the board or a connected device matters almost as
much as whether you tie your shoes overhand or underhand. But be sure you
connect to the correct location. Pin 6 is definitely NOT that. Pin 9
would be OK, but that connects directly to Coil +, so why not stick with
that?
http://www.gmcmhphotos.com/photos/onan/p39734-kh-redrawn-onan-schematic.html
Ken H.
Whether you connect to the board or a connected device matters almost as
much as whether you tie your shoes overhand or underhand. But be sure you
connect to the correct location. Pin 6 is definitely NOT that. Pin 9
would be OK, but that connects directly to Coil +, so why not stick with
that?
http://www.gmcmhphotos.com/photos/onan/p39734-kh-redrawn-onan-schematic.html
Ken H.
gene Fisher
May 29, 2017, 7:56:42 PM5/29/17
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Since you are quoting it and showing it. Why not correct it ?
On Mon, May 29, 2017 at 4:48 PM Ken Henderson <hend...@bellsouth.net>
wrote:
--
Gene Fisher -- 74-23,77PB/ore/ca
“Give a man a fish; you have fed him for today --- give him a URL and
-------
http://gmcmotorhome.info/
Alternator Protection Cable
http://gmcmotorhome.info/APC.html
Carl Stouffer
May 29, 2017, 8:24:49 PM5/29/17
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Ken Henderson wrote on Mon, 29 May 2017 16:46
That makes perfect sense, Ken (except for the part that pin 6 is definitely NOT it, since the diagram in the manual shows the connection to pin 6).
The generators, both of them, were wired to the coil from the factory, by Onan.
Unfortunately for me, the harness was cut just below the plug on the Onan side, and the plug had been bypassed on the other end. There were bits of
wire on the butt connectors, but they didn't seem to match up to my wiring. My coach is a '75, and Kerry's is a ?? so there was evidently a
difference in the harness going to the remote panel.
The generators, both of them, were wired to the coil from the factory, by Onan.
Unfortunately for me, the harness was cut just below the plug on the Onan side, and the plug had been bypassed on the other end. There were bits of
wire on the butt connectors, but they didn't seem to match up to my wiring. My coach is a '75, and Kerry's is a ?? so there was evidently a
difference in the harness going to the remote panel.
Ken Henderson
May 29, 2017, 8:25:12 PM5/29/17
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Remind me again where the error is -- I checked functionality & then forgot
the actual connection while hunting the program I used to create it. :-(
the actual connection while hunting the program I used to create it. :-(
Thanks,
Ken
A.
May 29, 2017, 8:33:00 PM5/29/17
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Carl S. wrote on Mon, 29 May 2017 19:24
Pin 6 goes to the Hobbs meter and the light (run indicator) on the remote switch.
Pin 9 powers the fuel pump and the ignition and the fuel shut-off solenoid.
Both have 12V only when running, but the manual says what I says.
> That makes perfect sense, Ken (except for the part that pin 6 is definitely NOT it, since the diagram in the manual shows the connection to pin
> 6). The generators, both of them, were wired to the coil from the factory, by Onan.
>
> Unfortunately for me, the harness was cut just below the plug on the Onan side, and the plug had been bypassed on the other end. There were bits
> of wire on the butt connectors, but they didn't seem to match up to my wiring. My coach is a '75, and Kerry's is a ?? so there was evidently a
> difference in the harness going to the remote panel.
>
> Thanks,
Its a good day for me. I got one on Mr. Henderson.
> 6). The generators, both of them, were wired to the coil from the factory, by Onan.
>
> Unfortunately for me, the harness was cut just below the plug on the Onan side, and the plug had been bypassed on the other end. There were bits
> of wire on the butt connectors, but they didn't seem to match up to my wiring. My coach is a '75, and Kerry's is a ?? so there was evidently a
> difference in the harness going to the remote panel.
>
> Thanks,
Pin 6 goes to the Hobbs meter and the light (run indicator) on the remote switch.
Pin 9 powers the fuel pump and the ignition and the fuel shut-off solenoid.
Both have 12V only when running, but the manual says what I says.
--
73 23' Sequoia 4 Sale
73 23' CanyonLands Parts Unit 4 Sale
Upper Alabama
"Every day I become more convinced that I am the only person left on the planet that recognizes nonsense for what it is."
73 23' Sequoia 4 Sale
73 23' CanyonLands Parts Unit 4 Sale
Upper Alabama
"Every day I become more convinced that I am the only person left on the planet that recognizes nonsense for what it is."
Ken Henderson
May 29, 2017, 8:49:42 PM5/29/17
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Carl,
By Golly, you're right! Onan's diagram DOES show 6=9 and I've got it
connected to CR5+CR7+R2 -- an obvious error I've propagated for the past
15+ years (without previous complaint). There's another error too, less
egregious than this one, that I'm hoping Mr. ERF will remind me of again.
Guess I had even more trouble reading the Onan schematic than I realized!
I'll try to find the program I used to create that drawing and correct it.
By the way, when I had an Onan, I rewired it using about 1/3 the OEM wire
-- there are a lot of, IMHO, dumb connections on there -- even without
changing any of the functionality. Some places I found 18" of wire where
6" was more than adequate.
Ken H.
O
n, May 29, 2017 at 8:24 PM, Carl Stouffer <carl...@gmail.com> wrote:
> ...
>
> That makes perfect sense, Ken (except for the part that pin 6 is
> definitely NOT it, since the diagram in the manual shows the connection to
> pin 6).
> The generators, both of them, were wired to the coil from the factory, by
> Onan.
>
> Unfortunately for me, the harness was cut just below the plug on the Onan
> side, and the plug had been bypassed on the other end. There were bits of
> wire on the butt connectors, but they didn't seem to match up to my
> wiring. My coach is a '75, and Kerry's is a ?? so there was evidently a
> difference in the harness going to the remote panel.
>
>
Johnny Bridges via Gmclist
May 29, 2017, 9:21:04 PM5/29/17
to gmc...@list.gmcnet.org, Johnny Bridges
Ken, both the circuit board and the wiring harness are 'one size fits several'. Not your fave but Onan saved a nickle doing that.
And, the Hobbs clock and Run light want twelve volts when the set is operating. Get it where you can.
--johnny
--
76 26' Eleganza(?) with beaucoup mods and add - ons.
Braselton, Ga.
"I forgive them all, save those who hurt the dogs. They must answer to me in hell" - ol Andy, paraphrased
And, the Hobbs clock and Run light want twelve volts when the set is operating. Get it where you can.
--johnny
--
76 26' Eleganza(?) with beaucoup mods and add - ons.
Braselton, Ga.
"I forgive them all, save those who hurt the dogs. They must answer to me in hell" - ol Andy, paraphrased
Carl Stouffer
May 29, 2017, 11:01:35 PM5/29/17
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Ken Henderson wrote on Mon, 29 May 2017 17:48
> Carl,
>
> By Golly, you're right! Onan's diagram DOES show 6=9 and I've got it
> connected to CR5+CR7+R2 -- an obvious error I've propagated for the past
> 15+ years (without previous complaint). There's another error too, less
> egregious than this one, that I'm hoping Mr. ERF will remind me of again.
> Guess I had even more trouble reading the Onan schematic than I realized!
> I'll try to find the program I used to create that drawing and correct it.
>
> By the way, when I had an Onan, I rewired it using about 1/3 the OEM wire
> -- there are a lot of, IMHO, dumb connections on there -- even without
> changing any of the functionality. Some places I found 18" of wire where
> 6" was more than adequate.
>
> Ken H.
>
> O
> Carl,
>
> By Golly, you're right! Onan's diagram DOES show 6=9 and I've got it
> connected to CR5+CR7+R2 -- an obvious error I've propagated for the past
> 15+ years (without previous complaint). There's another error too, less
> egregious than this one, that I'm hoping Mr. ERF will remind me of again.
> Guess I had even more trouble reading the Onan schematic than I realized!
> I'll try to find the program I used to create that drawing and correct it.
>
> By the way, when I had an Onan, I rewired it using about 1/3 the OEM wire
> -- there are a lot of, IMHO, dumb connections on there -- even without
> changing any of the functionality. Some places I found 18" of wire where
> 6" was more than adequate.
>
> Ken H.
>
> O
> n, May 29, 2017 at 8:24 PM, Carl Stouffer wrote:
>
> > ...
> >
> > That makes perfect sense, Ken (except for the part that pin 6 is
> > definitely NOT it, since the diagram in the manual shows the connection to
> > pin 6).
> > The generators, both of them, were wired to the coil from the factory, by
> > Onan.
> >
> > Unfortunately for me, the harness was cut just below the plug on the Onan
> > side, and the plug had been bypassed on the other end. There were bits of
> > wire on the butt connectors, but they didn't seem to match up to my
> > wiring. My coach is a '75, and Kerry's is a ?? so there was evidently a
> > difference in the harness going to the remote panel.
> >
> >
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>
> > ...
> >
> > That makes perfect sense, Ken (except for the part that pin 6 is
> > definitely NOT it, since the diagram in the manual shows the connection to
> > pin 6).
> > The generators, both of them, were wired to the coil from the factory, by
> > Onan.
> >
> > Unfortunately for me, the harness was cut just below the plug on the Onan
> > side, and the plug had been bypassed on the other end. There were bits of
> > wire on the butt connectors, but they didn't seem to match up to my
> > wiring. My coach is a '75, and Kerry's is a ?? so there was evidently a
> > difference in the harness going to the remote panel.
> >
> >
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
Ken,
I guess if a guy with your knowledge and qualifications had trouble reading the Onan schematic, I can see why I was COMPLETELY lost. My dad was an
EE, but it definitely didn't rub off on me! I guess I'll connect the wire in question to pin 6. The only reason I asked was that it seems like there
was a pulse in the voltage on the + side of the coil when reading it with the VOM. Maybe it won't make any difference. Just seems strange that GM
says to connect it to pin 6 and Onan wired it directly to the coil.
--
Carl Stouffer
'75 ex Palm Beach
Tucson, AZ.
Chuck Aulgur Reaction Arm Disc Brakes, Quadrabags, 3.70 LSD final drive, Lenzi knuckles/hubs, Dodge Truck 16" X 8" front wheels, Rear American Eagles,
Solar battery charging. GMCSJ and GMCMI member
_______________________________________________
A.
May 29, 2017, 11:28:18 PM5/29/17
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Carl S. wrote on Mon, 29 May 2017 22:00
The 6 pins across the top of the board are for the remote panel.
1 is ground.
2 is start.
3 is stop.
4 is not used in our application.
5 is for a battery condition meter.
6 is for the "generator running" indicator and the Hobbs meter.
> Ken,
> I guess if a guy with your knowledge and qualifications had trouble reading the Onan schematic, I can see why I was COMPLETELY lost. My dad was
> an EE, but it definitely didn't rub off on me! I guess I'll connect the wire in question to pin 6. The only reason I asked was that it seems like
> there was a pulse in the voltage on the + side of the coil when reading it with the VOM. Maybe it won't make any difference. Just seems strange
> that GM says to connect it to pin 6 and Onan wired it directly to the coil.
Onan never connected it to the coil. Onan connected it to pin 6. Someone who worked on it after it came from the factory stuck it on the coil.
> I guess if a guy with your knowledge and qualifications had trouble reading the Onan schematic, I can see why I was COMPLETELY lost. My dad was
> an EE, but it definitely didn't rub off on me! I guess I'll connect the wire in question to pin 6. The only reason I asked was that it seems like
> there was a pulse in the voltage on the + side of the coil when reading it with the VOM. Maybe it won't make any difference. Just seems strange
> that GM says to connect it to pin 6 and Onan wired it directly to the coil.
The 6 pins across the top of the board are for the remote panel.
1 is ground.
2 is start.
3 is stop.
4 is not used in our application.
5 is for a battery condition meter.
6 is for the "generator running" indicator and the Hobbs meter.
--
73 23' Sequoia 4 Sale
73 23' CanyonLands Parts Unit 4 Sale
Upper Alabama
"Every day I become more convinced that I am the only person left on the planet that recognizes nonsense for what it is."
73 23' Sequoia 4 Sale
73 23' CanyonLands Parts Unit 4 Sale
Upper Alabama
"Every day I become more convinced that I am the only person left on the planet that recognizes nonsense for what it is."
Carl Stouffer
May 29, 2017, 11:33:41 PM5/29/17
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A Hamilto wrote on Mon, 29 May 2017 20:27
like a factory installation to me.
--
Carl Stouffer
'75 ex Palm Beach
Tucson, AZ.
Chuck Aulgur Reaction Arm Disc Brakes, Quadrabags, 3.70 LSD final drive, Lenzi knuckles/hubs, Dodge Truck 16" X 8" front wheels, Rear American Eagles,
Solar battery charging. GMCSJ and GMCMI member
> Carl S. wrote on Mon, 29 May 2017 22:00
> > Ken,
> > I guess if a guy with your knowledge and qualifications had trouble reading the Onan schematic, I can see why I was COMPLETELY lost. My dad
> > was an EE, but it definitely didn't rub off on me! I guess I'll connect the wire in question to pin 6. The only reason I asked was that it seems
> > like there was a pulse in the voltage on the + side of the coil when reading it with the VOM. Maybe it won't make any difference. Just seems
> > strange that GM says to connect it to pin 6 and Onan wired it directly to the coil.
>
> Onan never connected it to the coil. Onan connected it to pin 6. Someone who worked on it after it came from the factory stuck it on the coil.
>
> The 6 pins across the top of the board are for the remote panel.
>
> 1 is ground.
> 2 is start.
> 3 is stop.
> 4 is not used in our application.
> 5 is for a battery condition meter.
> 6 is for the "generator running" indicator and the Hobbs meter.
Not as far as I can tell. Both Onans had the pin 6 wire connected to the coil with an un-modified wiring harness, exactly the same way. Sure looked
> > Ken,
> > I guess if a guy with your knowledge and qualifications had trouble reading the Onan schematic, I can see why I was COMPLETELY lost. My dad
> > was an EE, but it definitely didn't rub off on me! I guess I'll connect the wire in question to pin 6. The only reason I asked was that it seems
> > like there was a pulse in the voltage on the + side of the coil when reading it with the VOM. Maybe it won't make any difference. Just seems
> > strange that GM says to connect it to pin 6 and Onan wired it directly to the coil.
>
> Onan never connected it to the coil. Onan connected it to pin 6. Someone who worked on it after it came from the factory stuck it on the coil.
>
> The 6 pins across the top of the board are for the remote panel.
>
> 1 is ground.
> 2 is start.
> 3 is stop.
> 4 is not used in our application.
> 5 is for a battery condition meter.
> 6 is for the "generator running" indicator and the Hobbs meter.
like a factory installation to me.
--
Carl Stouffer
'75 ex Palm Beach
Tucson, AZ.
Chuck Aulgur Reaction Arm Disc Brakes, Quadrabags, 3.70 LSD final drive, Lenzi knuckles/hubs, Dodge Truck 16" X 8" front wheels, Rear American Eagles,
Solar battery charging. GMCSJ and GMCMI member
A.
May 29, 2017, 11:45:17 PM5/29/17
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Carl S. wrote on Mon, 29 May 2017 22:32
remote panel connection.
I suppose there could have been deviations on the assembly line for one reason or another.
I had to install the Onan in the Sequoia with nothing to go on but factory documentation. I never saw anything that would make me think to connect the
Hobbs meter/run indicator to the coil. I have three different Onan manuals (6kw, 4kw ops/parts and 4kw major service). Not one of them shows anything
on the remote panel going anywhere but the top row of the control board.
> Not as far as I can tell. Both Onans had the pin 6 wire connected to the coil with an un-modified wiring harness, exactly the same way. Sure
> looked like a factory installation to me.
I have only messed with three Onans. All were wired as I outlined above. And it is pretty clear that the top row on the board is/was intended for the
> looked like a factory installation to me.
remote panel connection.
I suppose there could have been deviations on the assembly line for one reason or another.
I had to install the Onan in the Sequoia with nothing to go on but factory documentation. I never saw anything that would make me think to connect the
Hobbs meter/run indicator to the coil. I have three different Onan manuals (6kw, 4kw ops/parts and 4kw major service). Not one of them shows anything
on the remote panel going anywhere but the top row of the control board.
--
73 23' Sequoia 4 Sale
73 23' CanyonLands Parts Unit 4 Sale
Upper Alabama
"Every day I become more convinced that I am the only person left on the planet that recognizes nonsense for what it is."
73 23' Sequoia 4 Sale
73 23' CanyonLands Parts Unit 4 Sale
Upper Alabama
"Every day I become more convinced that I am the only person left on the planet that recognizes nonsense for what it is."
Johnny Bridges via Gmclist
May 30, 2017, 8:55:02 AM5/30/17
to gmc...@list.gmcnet.org, Johnny Bridges
I've installed the 'contractor' version (different manifolds, a bit taller and higher output, 120/240 alternator, in remoted stuff. With the feed
taken off the coil factory new.
--johnny
--
76 26' Eleganza(?) with beaucoup mods and add - ons.
Braselton, Ga.
"I forgive them all, save those who hurt the dogs. They must answer to me in hell" - ol Andy, paraphrased
taken off the coil factory new.
--johnny
--
76 26' Eleganza(?) with beaucoup mods and add - ons.
Braselton, Ga.
"I forgive them all, save those who hurt the dogs. They must answer to me in hell" - ol Andy, paraphrased
John R. Lebetski
May 30, 2017, 9:34:23 AM5/30/17
to gmc...@list.gmcnet.org
On my 77 the wire colors were not the same at both ends. The PO had run SO cable the last few feet to the Onan (mess). I cut back to about 4" where
the remote wires come through the grommet into the Onan compartment. Then got marine multi conductor control wire at West Marine and used melt butt
splices with shrink over the entire splice. I used a meter to trace and wrote up a new cheat sheet then dressed everthing around the rear as factory.
This should never need attention again in our lifetimes.
--
John Lebetski
Woodstock, IL
77 Eleganza II
the remote wires come through the grommet into the Onan compartment. Then got marine multi conductor control wire at West Marine and used melt butt
splices with shrink over the entire splice. I used a meter to trace and wrote up a new cheat sheet then dressed everthing around the rear as factory.
This should never need attention again in our lifetimes.
--
John Lebetski
Woodstock, IL
77 Eleganza II
Carl Stouffer
May 30, 2017, 11:35:12 AM5/30/17
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Johnny Bridges wrote on Tue, 30 May 2017 05:54
--
Carl Stouffer
'75 ex Palm Beach
Tucson, AZ.
Chuck Aulgur Reaction Arm Disc Brakes, Quadrabags, 3.70 LSD final drive, Lenzi knuckles/hubs, Dodge Truck 16" X 8" front wheels, Rear American Eagles,
Solar battery charging. GMCSJ and GMCMI member
> I've installed the 'contractor' version (different manifolds, a bit taller and higher output, 120/240 alternator, in remoted stuff. With the feed
> taken off the coil factory new.
>
> --johnny
Thank you Johnny! I knew I wasn't going crazy. ;)
> taken off the coil factory new.
>
> --johnny
--
Carl Stouffer
'75 ex Palm Beach
Tucson, AZ.
Chuck Aulgur Reaction Arm Disc Brakes, Quadrabags, 3.70 LSD final drive, Lenzi knuckles/hubs, Dodge Truck 16" X 8" front wheels, Rear American Eagles,
Solar battery charging. GMCSJ and GMCMI member
Johnny Bridges via Gmclist
May 30, 2017, 11:37:24 AM5/30/17
to gmc...@list.gmcnet.org, Johnny Bridges
One of the (very few) positive things about the Junkerac I removed was the keyed Molex connector for the remote panel.
--johnny
--
76 26' Eleganza(?) with beaucoup mods and add - ons.
Braselton, Ga.
"I forgive them all, save those who hurt the dogs. They must answer to me in hell" - ol Andy, paraphrased
--johnny
--
76 26' Eleganza(?) with beaucoup mods and add - ons.
Braselton, Ga.
"I forgive them all, save those who hurt the dogs. They must answer to me in hell" - ol Andy, paraphrased
A.
May 30, 2017, 6:54:15 PM5/30/17
to gmc...@list.gmcnet.org
Johnny Bridges wrote on Tue, 30 May 2017 07:54
it when the generator has reached speed (and the board thinks it is running). The second is that the coil + has 12VDC on it as soon as the start
switch is pressed. Without looking at the schematic, the coil + and pin 6 might be electrically identical. But...
It doesn't seem right that the "run" indicator lamp should come on as soon as the start switch is engaged. It will if it is wired to the coil. It
should come on after the flywheel alternator spins up.
> I've installed the 'contractor' version (different manifolds, a bit taller and higher output, 120/240 alternator, in remoted stuff. With the feed
> taken off the coil factory new.
>
> --johnny
I haven't stared at the schematic for the Onan board long enough to know reality, but two things I know: One is that pin 6 should only have 12VDC on
> taken off the coil factory new.
>
> --johnny
it when the generator has reached speed (and the board thinks it is running). The second is that the coil + has 12VDC on it as soon as the start
switch is pressed. Without looking at the schematic, the coil + and pin 6 might be electrically identical. But...
It doesn't seem right that the "run" indicator lamp should come on as soon as the start switch is engaged. It will if it is wired to the coil. It
should come on after the flywheel alternator spins up.
--
73 23' Sequoia 4 Sale
73 23' CanyonLands Parts Unit 4 Sale
Upper Alabama
"Every day I become more convinced that I am the only person left on the planet that recognizes nonsense for what it is."
73 23' Sequoia 4 Sale
73 23' CanyonLands Parts Unit 4 Sale
Upper Alabama
"Every day I become more convinced that I am the only person left on the planet that recognizes nonsense for what it is."
A.
May 30, 2017, 7:32:09 PM5/30/17
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A Hamilto wrote on Tue, 30 May 2017 17:31
soon as the start switch is engaged. And that is not correct.
I don't really care if it is picking at nits, and I don't care if Onan sometimes wired them to the coil + (pin 9). The run indicator and Hobbs meter
belong on pin 6. All their documentation I have says so.
Unless someone can point me at Onan documentation that shows the run indicator and/or Hobbs meter on anything other than pin 6, and why it was done,
it is wired wrong. It might have even come from the factory that way. Run indicator lit as soon as starter is engaged is wrong.
> I haven't stared at the schematic for the Onan board long enough to know reality, but two things I know: One is that pin 6 should only have 12VDC
> on it when the generator has reached speed (and the board thinks it is running). The second is that the coil + has 12VDC on it as soon as the start
> switch is pressed. Without looking at the schematic, the coil + and pin 6 might be electrically identical. But...
>
> It doesn't seem right that the "run" indicator lamp should come on as soon as the start switch is engaged. It will if it is wired to the coil. It
> should come on after the flywheel alternator spins up.
OK. I stared at the schematic. The coil + is the same as pin 9. And that is NOT the same as pin 6. Pin 9 will indicate that the Onan is running as
> on it when the generator has reached speed (and the board thinks it is running). The second is that the coil + has 12VDC on it as soon as the start
> switch is pressed. Without looking at the schematic, the coil + and pin 6 might be electrically identical. But...
>
> It doesn't seem right that the "run" indicator lamp should come on as soon as the start switch is engaged. It will if it is wired to the coil. It
> should come on after the flywheel alternator spins up.
soon as the start switch is engaged. And that is not correct.
I don't really care if it is picking at nits, and I don't care if Onan sometimes wired them to the coil + (pin 9). The run indicator and Hobbs meter
belong on pin 6. All their documentation I have says so.
Unless someone can point me at Onan documentation that shows the run indicator and/or Hobbs meter on anything other than pin 6, and why it was done,
it is wired wrong. It might have even come from the factory that way. Run indicator lit as soon as starter is engaged is wrong.
Ken Henderson
May 30, 2017, 7:57:57 PM5/30/17
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A.,
I don't know what Onan schematic you're looking at, 'cause the one I see in
the Onan manual, page 30, shows pins 6 & 9 directly connected to the fuel
solenoid, the fuel pump, and the coil. I posted a very roughly hi-lited
copy at:
https://drive.google.com/file/d/0B3XquSIYjDleZjRiOEwyN1NxeXM/view?usp=sharing
Have you found a different version?
Ken H.
I don't know what Onan schematic you're looking at, 'cause the one I see in
the Onan manual, page 30, shows pins 6 & 9 directly connected to the fuel
solenoid, the fuel pump, and the coil. I posted a very roughly hi-lited
copy at:
https://drive.google.com/file/d/0B3XquSIYjDleZjRiOEwyN1NxeXM/view?usp=sharing
Have you found a different version?
Ken H.
A.
May 30, 2017, 8:52:40 PM5/30/17
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Ken Henderson wrote on Tue, 30 May 2017 18:56
(and/or Hobbs meter) of the remote panel wiring connected anywhere but pin 6?
From the 4k ops and parts manual, page 11, figure 10:
http://www.gmcmhphotos.com/photos/data/10/Onan_Control_Board_Schematic.jpg
And page 8, figure 6:
http://www.gmcmhphotos.com/photos/data/10/medium/Onan_Remote_Control_Switch.jpg
And page 9, figure 8:
http://www.gmcmhphotos.com/photos/data/10/medium/Onan_Deluxe_Remote_Control.jpg
> A.,
> I don't know what Onan schematic you're looking at, 'cause the one I see in the Onan manual, page 30, shows pins 6 & 9 directly connected to the
> fuel solenoid, the fuel pump, and the coil. I posted a very roughly hi-lited copy at:
> https://drive.google.com/file/d/0B3XquSIYjDleZjRiOEwyN1NxeXM/view?usp=sharing
>
> Have you found a different version?
>
> Ken H.
Apparently. I Have a 6k manual, but the resolution is too poor to make out the pin numbers. What manual do you have that shows the run indicator lamp
> I don't know what Onan schematic you're looking at, 'cause the one I see in the Onan manual, page 30, shows pins 6 & 9 directly connected to the
> fuel solenoid, the fuel pump, and the coil. I posted a very roughly hi-lited copy at:
> https://drive.google.com/file/d/0B3XquSIYjDleZjRiOEwyN1NxeXM/view?usp=sharing
>
> Have you found a different version?
>
> Ken H.
(and/or Hobbs meter) of the remote panel wiring connected anywhere but pin 6?
From the 4k ops and parts manual, page 11, figure 10:
http://www.gmcmhphotos.com/photos/data/10/Onan_Control_Board_Schematic.jpg
And page 8, figure 6:
http://www.gmcmhphotos.com/photos/data/10/medium/Onan_Remote_Control_Switch.jpg
And page 9, figure 8:
http://www.gmcmhphotos.com/photos/data/10/medium/Onan_Deluxe_Remote_Control.jpg
A.
May 30, 2017, 8:54:33 PM5/30/17
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Of course, there is this one that shows pin 6 and 9 being electrically identical (but the remote panel still connects to pin 6):
I really think the run indicator on the remote panel and the Hobbs meter should be connected to pin 6 so that it is independent of the revision of
board you are using.
http://www.gmcmhphotos.com/photos/data/10/Onan_Schematic.jpg
I really think the run indicator on the remote panel and the Hobbs meter should be connected to pin 6 so that it is independent of the revision of
board you are using.
http://www.gmcmhphotos.com/photos/data/10/Onan_Schematic.jpg
Ken Henderson
May 30, 2017, 9:07:21 PM5/30/17
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Ah Ha! We've found it! I don't have time now to do the research to sort
it all out, but there ARE differences in the manuals!
The schematic you show IS different than that I referred to. And yours is
obviously the one from which I drew "my" version because it shows (6)
connected as I just "corrected" to agree with the other schematic. :-(
I'll try to get back into this tomorrow and identify which manuals have
which versions.
Ken H.
it all out, but there ARE differences in the manuals!
The schematic you show IS different than that I referred to. And yours is
obviously the one from which I drew "my" version because it shows (6)
connected as I just "corrected" to agree with the other schematic. :-(
I'll try to get back into this tomorrow and identify which manuals have
which versions.
Ken H.
Carl Stouffer
May 31, 2017, 2:04:11 PM5/31/17
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Thanks everyone. I DID connect the running indicator light/Hobbs meter wire to the #6 pin on the control board as suggested. Everything works as it
should.
should.
--
Carl Stouffer
'75 ex Palm Beach
Tucson, AZ.
Chuck Aulgur Reaction Arm Disc Brakes, Quadrabags, 3.70 LSD final drive, Lenzi knuckles/hubs, Dodge Truck 16" X 8" front wheels, Rear American Eagles,
Solar battery charging. GMCSJ and GMCMI member
Carl Stouffer
'75 ex Palm Beach
Tucson, AZ.
Chuck Aulgur Reaction Arm Disc Brakes, Quadrabags, 3.70 LSD final drive, Lenzi knuckles/hubs, Dodge Truck 16" X 8" front wheels, Rear American Eagles,
Solar battery charging. GMCSJ and GMCMI member
Ken Henderson
May 31, 2017, 9:13:29 PM5/31/17
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OK, here's the answer to our conflict:
There are at least two Onan service manuals, with the ID numbers 6A73 and
10A73. They're posted here:
https://drive.google.com/drive/folders/0B3XquSIYjDleMTBNZ3hoQTJnYU0?usp=sharing
Also posted there, extracted from each of the manuals, are the
corresponding wiring diagrams. If you examine them closely, in light of
our recent conversations, you'll see that on the 6A73 schematic pins 6 and
9 are directly connected to each other and to the ignition coil, the fuel
solenoid, and the fuel pump. On the 10A73 schematic, pin 6 has been moved
to the junction of CR5, CR7, and R2.
It's obvious that the purpose of the change was to provide the isolation
some of you want of the RTM from the starter. Too bad Onan never announced
(or, more likely, we late-comers missed) the change. I suspect the 10A73
configuration is what most of us have -- 'tho' I have no evidence to
support that.
My modified wiring diagram was obviously taken from the 10A73 version --
despite my having rather badly screwed up the flywheel alternator
connection. I'll get around to fixing that soon.
Ken H.
On Tue, May 30, 2017 at 9:05 PM, Ken Henderson <hend...@bellsouth.net>
wrote:
There are at least two Onan service manuals, with the ID numbers 6A73 and
10A73. They're posted here:
https://drive.google.com/drive/folders/0B3XquSIYjDleMTBNZ3hoQTJnYU0?usp=sharing
Also posted there, extracted from each of the manuals, are the
corresponding wiring diagrams. If you examine them closely, in light of
our recent conversations, you'll see that on the 6A73 schematic pins 6 and
9 are directly connected to each other and to the ignition coil, the fuel
solenoid, and the fuel pump. On the 10A73 schematic, pin 6 has been moved
to the junction of CR5, CR7, and R2.
It's obvious that the purpose of the change was to provide the isolation
some of you want of the RTM from the starter. Too bad Onan never announced
(or, more likely, we late-comers missed) the change. I suspect the 10A73
configuration is what most of us have -- 'tho' I have no evidence to
support that.
My modified wiring diagram was obviously taken from the 10A73 version --
despite my having rather badly screwed up the flywheel alternator
connection. I'll get around to fixing that soon.
Ken H.
On Tue, May 30, 2017 at 9:05 PM, Ken Henderson <hend...@bellsouth.net>
wrote:
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