Citroen Xsara Picasso tow bar wiring.

This is the Forum for all your Citroen Technical Questions, Problems or Advice.

Moderator: RichardW

jscadden
(Donor 2022)
Posts: 43
Joined: 13 Aug 2019, 17:24
x 4

Citroen Xsara Picasso tow bar wiring.

Post by jscadden »

Just fitted a towbar to the car to tow a small trailer.

The towbar came with a wiring kit which included relay for use when certain circuitry was installed on the car .

The relay supplied is a TEB7AS 7 Way Universal Relay including buzzer.
Is this a necessity on this vehicle or can I just install a buzzer for the indicators?
John

Xsara Picasso VTX 16V

VIN VF7**************[VIN obfuscated, can be read by forum staff]
User avatar
GiveMeABreak
Forum Admin Team
Posts: 37769
Joined: 15 Sep 2015, 19:38
x 5816

Re: Citroen Xsara Picasso tow bar wiring.

Post by GiveMeABreak »

I can't advise on this kit, only the official PSA recommended products which are designed for integration with vehicle systems. PSA systems generally have s separate fusebox unit designed for the electrical towbar wiring that interfaces with the existing loom.
Please Don't PM Me For Technical Help

Marc
jscadden
(Donor 2022)
Posts: 43
Joined: 13 Aug 2019, 17:24
x 4

Re: Citroen Xsara Picasso tow bar wiring.

Post by jscadden »

I have installed and wired several towbars over the years but this is the first time that a relay has been required other than to control wiring to control charging to a caravan.

I am only wiring for a trailer here.
John

Xsara Picasso VTX 16V

VIN VF7**************[VIN obfuscated, can be read by forum staff]
User avatar
GiveMeABreak
Forum Admin Team
Posts: 37769
Joined: 15 Sep 2015, 19:38
x 5816

Re: Citroen Xsara Picasso tow bar wiring.

Post by GiveMeABreak »

It is necessary because they specify that they take the lighting signals and covert this into a 12V feed for the trailer lighting so it doesn’t take power from the lighting circuit on the car. That is why it is there and requires a 15a fused supply.

Of course it does not support vehicle ESP systems with a special towing programme which your vehicle probably has, being that it has ESP.
Please Don't PM Me For Technical Help

Marc