Bypass relay

petetop

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Mar 7, 2010, 5:47:58 AM3/7/10

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Hi
I have wired a 7 way bypass relay to earth and permament live ( with an
inline fuse between relay and live connection ) with no other wires
connected yet.
As soon as I put in the inline fuse I get a constant high pitched whistle
coming from the relay box.
If I connect the towbar plug socket wires it does the same. I then
connected the rear light wires from the vehicle. It still whistles.
Obviously removing the fuse at each step.
Does this mean the relay is faulty or am I doing something wrong?
Regards

Andy Cap

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Mar 7, 2010, 7:38:58 AM3/7/10

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I know nothing about them, but is this explanation of any help ?
(I noticed no one picked up your ealier query)

http://tinyurl.com/y9mgx7c

petetop

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Mar 7, 2010, 7:51:34 AM3/7/10

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"Andy Cap" <Andy...@nosuch.co.uk> wrote in message
news:qf77p55fhgpka3qgr...@4ax.com...

Hi
Thanks for that, I have aquired a wiring diagram, same as in that shortcut.
My problem is now when I connect the relay to my battery it constantly
whistles.
Regards
Pete

Andy Cap

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Mar 7, 2010, 8:01:17 AM3/7/10

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Is that not the sounder, which indicates the trailer indicators are working OK ?

I would be inclined to make those two connections and see if the sounder stays
off.

petetop

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Mar 7, 2010, 8:33:14 AM3/7/10

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"Andy Cap" <Andy...@nosuch.co.uk> wrote in message

news:on87p5t3h3mmr7l6n...@4ax.com...

I have just wired up the left and right indicators to the relay, still
constant whistling when the 12v is connected. I ignored the whistling and
tried the indicators, the tester showed power was going to them through the
relay but still got a constant whistling.
Regards

steve robinson

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Mar 7, 2010, 9:49:23 AM3/7/10

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petetop wrote:

It sounds as though you have the wiring screwed up or the wrong relay

You dont say which car or if its a canbus or muliplexed system it
makes a difference to how you install

You may find a terminal marked tt make sure its not connected to
earth

Check out the towsure website they have a pdf document on installing
these types of relays

petetop

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Mar 7, 2010, 10:30:37 AM3/7/10

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"steve robinson" <st...@colevalleyinteriors.co.uk> wrote in message
news:xn0grcys...@news.virginmedia.com...

Its a bit hard to screw the wiring up when you have only live and earth
connected straight to battery. No I haven't got the "TT" connected to
anything.
The vehicle is a vectra c.
I have connected yellow to left indicator and green to right indicator.
Even without these connected it still whistles.
The relay is a 7 way bypass relay model no. TEB7AS
Regards

steve robinson

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Mar 7, 2010, 11:15:20 AM3/7/10

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petetop wrote:

Not really its amazing how many people do screw up the connections

Go back to basics and start again , recheck that you have connected
the permament feed and ground correctly its one of the biggest
mistakes made

No I haven't got the "TT"

The vehicle is a vectra c. I have
> connected yellow to left indicator and green to right indicator.
> Even without these connected it still whistles. The relay is a 7
> way bypass relay model no. TEB7AS Regards

The TEB7AS is for CAN BUS or multiplexed systems , according to
towing electrics website , its quite possible the noise is a fault
warning because not picking up the other feeds including braking and
tail lights .

CAN BUS systems are not just power supplies they are controlled by
ECUs around the car sending out signals constantly , even when the
lights are off , similar to a computer network .

I am not sure if the vectra c is fully can bus or just part can bus

rp

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Mar 7, 2010, 11:15:33 AM3/7/10

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On Sun, 7 Mar 2010 15:30:37 -0000, petetop wrote:

>Its a bit hard to screw the wiring up when you have only live and earth
>connected straight to battery. No I haven't got the "TT" connected to
>anything.
> The vehicle is a vectra c.
> I have connected yellow to left indicator and green to right indicator.
>Even without these connected it still whistles.
> The relay is a 7 way bypass relay model no. TEB7AS
> Regards

Sounds like you have a faulty relay since
http://i208.photobucket.com/albums/bb105/golfmk5gttdi/page2.jpg says it
should only sound if you have a load connected to the flasher circuits.

--
Regards - Rodney Pont
The from address exists but is mostly dumped,
please send any emails to the address below
e-mail ngpsm4 (at) infohitsystems (dot) ltd (dot) uk

petetop

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Mar 7, 2010, 11:49:50 AM3/7/10

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"rp" <aspa...@infohitsystems.ltd.uk> wrote in message
news:atcfzvasbuvgflfgrzfy...@ouse.infohitsystems.ltd.uk...

Hi
Thats the same wiring diagram I have, thats why I asked if its possibly a
faulty relay.
Regards
Pete

steve robinson

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Mar 7, 2010, 12:11:22 PM3/7/10

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petetop wrote:

You could always meter the relay out using a multimeter

The vectra has a checking system which will make it tick down until
the electrics on the internal lights switch off

My Email is live send me your address and i will send you towsures
instructions for installing it , it specifically mentions vectras

stu...@sky.com

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May 15, 2014, 12:24:28 PM5/15/14

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Think that means relay is faulty, I read about it on Google, as I'm after one myself.

Scott M

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May 15, 2014, 2:47:46 PM5/15/14

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stu...@sky.com wrote:
> Think that means relay is faulty, I read about it on Google, as I'm after one myself.

The cuckoo flies backwards over the Kremlin, tovarisch.

--
Scott

Where are we going and why am I in this handbasket?

The Revd

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May 15, 2014, 3:06:52 PM5/15/14

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On Thu, 15 May 2014 09:24:28 -0700 (PDT), stu...@sky.com wrote:

>Think that means relay is faulty, I read about it on Google, as I'm after one myself.

No, you don't want to bypass any relays, you'll blow the battery!

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