[GMCnet] LED DRL Exterior wiring

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James Schulte

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Nov 12, 2016, 5:33:13 PM11/12/16
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Renewing wiring on a 1977 23 ft Birchaven

Thinking of all exterior lighting to LED except headlights and adding DRL

Plan - replace flasher ( only one on this coach) with a electronic one
LEDs will be non polarity sensitive
Install a DRL-1
Include out side upper clearance light in parallel with side clearance light on front
Wire rear upper clearance light and side light as the front is wired - front is wired
Turn on - side off
Turn off - side on

Hoped for result
Engine on all running lights on

Turn signal on
Directional light flash
Side clearance lights flash
Top out board clearance light flash

Will this work? Jim



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James Hupy

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Nov 12, 2016, 5:53:45 PM11/12/16
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Why annoy other drivers during daylight hours. If they cannot see an object
as large and unique shaped as a GMC motor home coming towards them, then
one has to question why they are still in possession of a drivers license.
I personally hate DRLs. But, it is America after all. Spend your money how
it pleases you.
Jim Hupy
Salem, Or
78 GMC ROYALE 403

On Nov 12, 2016 2:33 PM, "James Schulte" <jimin...@iowatelecom.net>
wrote:

A.

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Nov 12, 2016, 6:05:36 PM11/12/16
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Jim Schulte wrote on Sat, 12 November 2016 16:32
> Renewing wiring on a 1977 23 ft Birchaven
> Thinking of all exterior lighting to LED except headlights and adding DRL
>
> Plan - replace flasher ( only one on this coach) with a electronic one
> LEDs will be non polarity sensitive
> Install a DRL-1
> Include out side upper clearance light in parallel with side clearance light on front
> Wire rear upper clearance light and side light as the front is wired - front is wired
> Turn on - side off
> Turn off - side on
>
> Hoped for result
> Engine on all running lights on
>
> Turn signal on
> Directional light flash
> Side clearance lights flash
> Top out board clearance light flash
>
> Will this work? Jim
It will take some wire runs, but is doable. As long as the top outside clearance light flashes with the turn signal, why not make the top center three
red rear clearance lights brighten with the brake lights (will need to replace the sockets with double filament types and run some wires)?
--
73 23' Sequoia 4 Sale
73 23' CanyonLands Parts Unit 4 Sale
Upper Alabama
"Highest price does not guarantee highest quality."

Emery Stora

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Nov 12, 2016, 8:12:38 PM11/12/16
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You had better check state laws. When I once lived in NJ it was illegal to have any flashing light on the top
Such as a flashing clearance light used as a turn signal. I don't know if that law is still in effect there.

Emery Stora
77 Kingsley
Frederick, CO

Terry

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Nov 13, 2016, 1:13:23 AM11/13/16
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10-4 James...with the DRLs coming at me when I'm turning on to the highway I can't see the motorcycles that are ahead of the cars that have the lights
on.
--
Terry Kelpien

ASE Master Technician

73 Glacier 260

Smithfield, Va.

Terry

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Nov 13, 2016, 1:21:17 AM11/13/16
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Post us a link to those "non-polarity sensitive" LEDs...they would come in handy for some reverse wired applications.
--
Terry Kelpien

ASE Master Technician

73 Glacier 260

Smithfield, Va.


Matt Colie

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Nov 13, 2016, 11:00:27 AM11/13/16
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James Hupy wrote on Sat, 12 November 2016 17:53
> Why annoy other drivers during daylight hours. If they cannot see an object as large and unique shaped as a GMC motor home coming towards them,
> then one has to question why they are still in possession of a drivers license.
> I personally hate DRLs. But, it is America after all. Spend your money how it pleases you.
> Jim Hupy

Jim and Terry,

I understand what both of you are saying, and this is all part of an argument that the motorcycle people had years ago when states started to require
us to run with the headlight on. (This was in spite of the fact that studies done in at least two of those states showed that this have no effect on
motorcycle safety.) I put it in the same box as having the landing/taxing lights on when in the landing pattern. It helps others to know whether you
are coming or going.

But then, on the streets, highways and byways, we have other issues.
One is that about 40% of the drivers (being generous) on the road are idiots and have no clue what s/he should be doing.
Maintenance can be dirty, takes technological tools (like a screwdriver) and is too expensive. So things like headlight alignment are just not done.
Having out of alignment headlights on is very common in states that have no required vehicle inspection that includes this. Michigan is a great
example here.

I am going to put some LED strip lights in my grill during my winter work and couple them as DRL (actual method not yet determined) in the (possibly
fruitless) hope that it will intimidate some bozo from port tacking (a racing sailors term for trying to take right of way he does not have) us Again.
They seem to think that the coach is either slow because it is big, or maybe farther away because it is a smaller front than other coaches. I really
don't know. I do know that I am tired of dealing with it.

Side Note:
You think it is bad out there now, wait until autonomous braking is common. I expect that to do just about what the automatic transmission did.

Matt
--
Matt & Mary Colie - Members GMCMI, GMCGL, GMCES
'73 Glacier 23 - Still Loving OE Rear Drum Brake with Applied Control Arms
Now with both true Keyless and remote entry
SE Michigan - Twixt A2 and Detroit

Terry

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Nov 13, 2016, 12:25:10 PM11/13/16
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Whenever I'm riding my bike, I ASSUME the drivers entering the roadway do not see me, and prepare for them to pull out right in front of me AFTER my
safe reaction space is already used up. Those pre-intersection thoughts have saved me several times even though my headlight and front turn signal
lights were on. Unfortunately, twice in the past few months I have heard the tires squeal BEHIND me as inattentive (or blind) drivers have slid to a
stop behind me when I was already stopped for traffic, and one actually (fortunately) saw me in the last 25 feet and ran off the road to the right to
avoid crushing me in between her car and the one I was stopped behind. She was putting her cell phone down as I looked over at her. The DRLs on her
car were not helping either of us at that point, but they were on. A collision warning system in her car might have snapped her back to the task at
hand at that time, much like the teacher slapping the yardstick on the desk when half the class was on the verge of falling asleep. Autonomous braking
would probably have seen the vehicle in front of me, but I don't know if it would have detected me on the motorcycle 12-15 feet behind it. Might still
have gotten crushed.

I believe the autonomous braking and lane-drifting systems that are being introduced now are going to lure our younger drivers into a false sense of
robotic control of the vehicle that THEY are supposed to be controlling. Even the Toyota commercial shows the girl lost in the reverie of singing a
song and only the lane-alert system snaps her back to reality and saves the oncoming vehicle. Other commercials seem to give a pass on inattentive
driving, showing how the vehicle will save them when they stop DRIVING a moving vehicle. Autopilot in the air with long range radar is OK until you
get within range of the airport, where there is much more activity, which is also more tightly controlled than transportation methods on the planet's
surface. There is just too much independent activity down here on the ground for an automatic system to compensate for 100% of the time. If they
manage to stop you from 60mph in time for an obstacle in the roadway, what about the vehicle behind you? 60mph is 88 feet per second, and very few, if
any, can stop that quickly. That's why we have to have drivers that can process the information and change lanes or take to the weeds if necessary.
Can't do that if your not paying attention.

DRLs are not going to help any of this and actually constitute another distraction and take away from the alert status of the flashing lights of
emergency vehicles, making them harder to distinguish from the sea of moving lights.

On the other hand, maybe we should require flashing beacons and audible alerts on ALL moving vehicles, like the earliest regulations for motorized
vehicles on city streets over a hundred years ago :lol: I am personally guilty of this by having the rub rail on the GMC lighted by LEDs when the
parking lights are on, and they flash opposite the turn signals when they are flashing and the parking lights are also on, depending on whether I
switch the ground for them to the marker lights or a constant ground. Either way, they are currently only on when the parking lights are on.


--
Terry Kelpien

ASE Master Technician

73 Glacier 260

Smithfield, Va.


John Wright

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Nov 13, 2016, 1:10:25 PM11/13/16
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The Non-Polarity style LED assemblies are available for most applications.

see this catalog
http://luxormarine-rv.com/LuxOr_Digest.pdf

I would suggest that any application that has an LED light assembly have the correct polarity anyway! If you put a polarity sensitive in the wrong socket then it is your fault if you haven’t checked the wiring anyway.

JR Wright
Michigan

Terry

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Nov 13, 2016, 1:59:16 PM11/13/16
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So I guess those have a protected automatic inverter circuit built into them? Great! That will be a big help for some of the reverse wired fixtures in
the GMC and perhaps some boats too. So now I can use LEDs to replace the floor lighting in the GMC without replacing the sockets. Didn't see any LED
strips yet, but they might be in there somewhere. Thanks JR!
--
Terry Kelpien

ASE Master Technician

73 Glacier 260

Smithfield, Va.


Terry

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Nov 13, 2016, 2:14:31 PM11/13/16
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JR Wright posted a link to Luxor on the other thread that has the non-polarity LEDs.

http://luxormarine-rv.com/LuxOr_Digest.pdf

The pdf did not have links for my browser so I just removed that part to go directly to the selling site.

D C _Mac_ Macdonald

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Nov 13, 2016, 2:31:46 PM11/13/16
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You don't HAVE to replace the sockets. Just cut and resplice the socket wires to correct the wiring error. Use crimp type butt splices and you won't even shorten the reach of the existing wires.


~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
~~ ~ D C "Mac" Macdonald ~ ~~
~ ~ Amateur Radio - K2GKK ~ ~
~ ~ Since 30 November '53 ~ ~
~ ~ USAF and FAA, Retired ~ ~
~ Member GMCMI and Classics ~
~ ~ ~ Oklahoma City, OK ~ ~ ~
~~ ~ ~ "The Money Pit" ~ ~ ~~
~ ~ ~ ~ TZE166V101966 ~ ~ ~ ~
~ ~ ~ '76 ex-Palm Beach ~ ~ ~
~~ k2gkk + hotmail dot com ~~
~ www.gmcmhphotos.com/okclb ~
~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
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"--OO--[]---O-"




________________________________
From: Gmclist <gmclist...@list.gmcnet.org> on behalf of Terry <mrbu...@verizon.net>
Sent: Sunday, November 13, 2016 12:58
To: gmc...@list.gmcnet.org
Subject: Re: [GMCnet] LED DRL Exterior wiring

A.

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Nov 13, 2016, 3:55:28 PM11/13/16
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k2gkk wrote on Sun, 13 November 2016 13:30
> You don't HAVE to replace the sockets. Just cut and resplice the socket wires to correct the wiring error. Use crimp type butt splices and you
> won't even shorten the reach of the existing wires.Quote:
> > From: Gmclist on behalf of Terry
> > Sent: Sunday, November 13, 2016 12:58
> > To: gmc...@list.gmcnet.org
> > Subject: Re: [GMCnet] LED DRL Exterior wiring
> >
> > So I guess those have a protected automatic inverter circuit built into them? Great! That will be a big help for some of the reverse wired
> > fixtures in the GMC and perhaps some boats too. So now I can use LEDs to replace the floor lighting in the GMC without replacing the sockets.
> > Didn't see any LED strips yet, but they might be in there somewhere. Thanks JR!
> > --
> > Terry Kelpien
> > ASE Master Technician
> > 73 Glacier 260
> > Smithfield, Va.
You could make your own polarity independent LED lamp with four LEDs and a resistor, two of the LEDs would be lit at any given time. Just wire them
like a diode bridge (AKA bridge rectifier) with the LEDs being the diodes and the "load" replaced with the current limiting resistor.
--
73 23' Sequoia 4 Sale
73 23' CanyonLands Parts Unit 4 Sale
Upper Alabama
"Highest price does not guarantee highest quality."

Terry

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Nov 13, 2016, 7:02:16 PM11/13/16
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I always knew I could reverse the wiring, but when I went looking for LED replacements for bulbs 2 years ago (maybe 3 now), I couldn't find LED
replacements for that #67 bulb in those floor lights (which are really license plate lights for truck bumpers), and the same story for the clearance
lights on top. Kinda gave up on that idea and just got some colored bulbs for the clearance lights and didn't really use the floor lights anyway. Glad
there are some people still looking for that stuff and sharing the knowledge on the list/forum so I can renew my enthusiasm for the LED substitutes
and reduce the current drain in both systems. Back then, I had found substitutes for the #194 bulbs and used them in the instrument panel and in the
low-voltage lighting out in the yard. They work well, and really brightened up the gauges, but don't dim very much in the instrument panel before they
cut off, and the ones outside in the yard are just starting to fail after 3 years of use at 4 to 6 hours per day.

Good suggestion on the bridge circuit for double polarity, then when 2 of the diodes fail you can reverse the bulb if it is a T-10 type socket and get
another life out of it!
--
Terry Kelpien

ASE Master Technician

73 Glacier 260

Smithfield, Va.


Johnny Bridges via Gmclist

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Nov 13, 2016, 8:05:57 PM11/13/16
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"Do it yourself" non-polarized LEDs... or anything else DC. Simply acquire a bridge rectifier, or assemble four diodes in a bridge configuration, of
sufficient current capacity and reverse voltage for the load and supply intended. Feed your unknown polarity DC (Or AC) into the "AC" terminals, and
connect the LED or other load properly to the + and - terminals. Voila! No longer polarity sensitive. I bought several hundred 1N series silicon
diodes for about 3 cents each off ebay.

--johnny

--
'76 23' transmode Norris upfit, 76 26' Eleganza(?) with beaucoup mods and add - ons.
Braselton, Ga.

"Sometimes I wonder what tomorrow's gonna bring when I think about my dirty life and times" --Warren Zevon

James Hupy

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Nov 13, 2016, 8:25:07 PM11/13/16
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My trusty Fluke 77 tells me polarity of D.C. circuits. Very handy for LEDs,
and polarity sensitive circuits. GMCs, particularly Coachman up fitted
ones, are notorious for lighting circuits being bas-akwards. I never assume
they are correct, I check them all.
Jim Hupy
Salem, Or
78 GMC ROYALE 403

On Nov 13, 2016 5:06 PM, "Johnny Bridges via Gmclist" <

Johnny Bridges via Gmclist

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Nov 13, 2016, 8:28:22 PM11/13/16
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Quick and dirty running lights - series several diodes, and feed the low beams through them from an ignition source. The junction drop is a bit over
half a volt per diode, and the current reduces accordingly. Although they're lit, they will be overpowered by the high beams or regular power to the
low beams, so the circuit can be left connected without switches or anything else. If I were going to do this, I'd take my trusty VOM and measure the
voltage across a GM auto headlight in DRL mode. A bit of arithmetic would give the necessary drop and current. I like diodes.

--johnny
--
'76 23' transmode Norris upfit, 76 26' Eleganza(?) with beaucoup mods and add - ons.
Braselton, Ga.

"Sometimes I wonder what tomorrow's gonna bring when I think about my dirty life and times" --Warren Zevon

gene Fisher

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Nov 14, 2016, 5:31:14 AM11/14/16
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Johnny Bridges via Gmclist

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Nov 14, 2016, 8:59:58 AM11/14/16
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Somebody wioth a GMC autop with DRLs how's to measure the voltage applied to the headlights in DRL mode with the engine running and report back. I
got old ford, newer Mopar and Kia, no DRLs.

--johnny
--
'76 23' transmode Norris upfit, 76 26' Eleganza(?) with beaucoup mods and add - ons.
Braselton, Ga.

"Sometimes I wonder what tomorrow's gonna bring when I think about my dirty life and times" --Warren Zevon

Matt Colie

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Nov 14, 2016, 9:24:25 AM11/14/16
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Almost 10 years ago, I wanted both RED and LED bulbs for our floor lights. What I found were expensive. So, I bought red LED trailer clearance
lights. They have been great and particularly good for locating the black dog in the dark.

Matt
--
Matt & Mary Colie - Members GMCMI, GMCGL, GMCES
'73 Glacier 23 - Still Loving OE Rear Drum Brake with Applied Control Arms
Now with both true Keyless and remote entry
SE Michigan - Twixt A2 and Detroit

James Schulte

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Nov 14, 2016, 7:29:03 PM11/14/16
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I checked with the State Highway Patrol and they had no problem with upper clearance lights as a part of the turn signal system. But I did discover
the flaw in my plan, the upper clearance light which are installed are polarity sensitive so am not sure they will blink if wired in parallel with the
side clearance light.

I just ordered the other bulbs and they will be not be polarity sensitive. Ordered from Super Bright led's - just google the for the web site

The DRL's - My intention is to just light the all clearance light upper and side and front and rear parking lights.

Jim

Terry

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Nov 15, 2016, 11:43:14 PM11/15/16
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"During WWII allied aircraft approaching land in daylight learned that DRL's would actually reduce the range at which they could be seen by the
enemy."

Just like looking at the stars on a moonlit night...
--
Terry Kelpien

ASE Master Technician

73 Glacier 260

Smithfield, Va.


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