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Towbar electrics & extra relays

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Old Jul 22nd, 2006, 13:27   #1
wheelnut
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Default Towbar electrics & extra relays

Just been looking to see what is involved in fitting a 12S socket to my P2 V70. It already has the 12N and behind the spare wheel I can find no less than 4 relays!!
One is the one which buzzes when the indicators flash and the other three are all identical. They all have 6 wires going in, red, grey, blue, white, brown, orange. The blue is to permanent live on the battery (via an inline fuse) and the white is ground to the battery.
What are they?? There is no trace of a 12S socket ever having been fitted before.
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Old Jul 23rd, 2006, 09:21   #2
Chris_Rogers
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Looks like an aftermarket bodge to me.

You may find it's simpler in the end to get the proper Volvo kit which includes software to enable the equipment, incuding the dash lights, via the CAN bus.
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Old Jul 26th, 2006, 01:27   #3
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Nice bodge, hats off to the prat that wired that,

If you look on wiring round that area you will see a big grey connecter thats hanging down doing nothing, there you will find every wire you need to wire up a twin electrics towbar, including a built in split charge system altho that needs a relay in the rear fuse box as does the foglight,

As above you may need a software download but it will only be to make the foglight work and not all cars need that
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Old Aug 1st, 2006, 21:04   #4
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Default Bulb failure?

Just a thought, but does your V70 have a bulb failure sensor?
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Old Aug 1st, 2006, 21:17   #5
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Quote:
Originally Posted by Rooster
Nice bodge, hats off to the prat that wired that,
Hummmm..... that looks worse than my wiring!!!
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Old Aug 1st, 2006, 21:21   #6
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Hi,
Quote:
Originally Posted by Alec Dawe
Hummmm..... that looks worse than my wiring!!!
And mine too, marginally!
But then, when you get a Witter kit installed by a company, they use the Witter supplied wiring and don't bother with the in-car wiring circuit that already exists...
One would have thought, when you odrer a witter tow bar for a Volvo 940, for example, they would be able to supply the appropriate kit for that car...

Des. . .
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Old Sep 8th, 2006, 14:32   #7
MidLifeCrisis
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Quote:
Originally Posted by Rooster View Post
Nice bodge, hats off to the prat that wired that,

If you look on wiring round that area you will see a big grey connecter thats hanging down doing nothing, there you will find every wire you need to wire up a twin electrics towbar, including a built in split charge system altho that needs a relay in the rear fuse box as does the foglight,

As above you may need a software download but it will only be to make the foglight work and not all cars need that
Do you know the details of the relay required?
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