2010 citroen c4 grand picasso towbar

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

Moderator: RichardW

Cam1972
Posts: 4
Joined: 04 Jul 2020, 02:41

2010 citroen c4 grand picasso towbar

Post by Cam1972 »

I am looking to fit a towbar to my c4 grand picasso 2010 plate but can't find wiring diagrams with wire color codes for the rear light clusters so don't know what wires should be connected to the wires for the trailer plug.
Does any one have the diagrams for this please

User avatar
GiveMeABreak
Forum Admin Team
Posts: 21594
Joined: 15 Sep 2015, 19:38
x 2170

Re: 2010 citroen c4 grand picasso towbar

Post by GiveMeABreak »

We'll need your VIN first.

Cam1972
Posts: 4
Joined: 04 Jul 2020, 02:41

Re: 2010 citroen c4 grand picasso towbar

Post by Cam1972 »

GiveMeABreak wrote:
04 Jul 2020, 10:08
We'll need your VIN first.
VF7**************[VIN obfuscated, can be read by forum staff]

Cam1972
Posts: 4
Joined: 04 Jul 2020, 02:41

Re: 2010 citroen c4 grand picasso towbar

Post by Cam1972 »

V F 7*****************
Last edited by xantia_v6 on 04 Jul 2020, 19:57, edited 1 time in total.
Reason: VIN masked

User avatar
GiveMeABreak
Forum Admin Team
Posts: 21594
Joined: 15 Sep 2015, 19:38
x 2170

Re: 2010 citroen c4 grand picasso towbar

Post by GiveMeABreak »

Focus on the Pin assignments, not the wire colours as these can change.

Rear Light Cluster on the body:
Note the Common Earth is on Pin 3:

Brake:
Pin 2 Live

Reversing:
Pin 1 Live

Rear Tail / Side Light:
Pin 5

Indicators:
Pin 4

Fog Lamps These I believe are in the bumper area and these are on Pin 1 and the Earth on Pin 2.

Cam1972
Posts: 4
Joined: 04 Jul 2020, 02:41

Re: 2010 citroen c4 grand picasso towbar

Post by Cam1972 »

GiveMeABreak wrote:
04 Jul 2020, 21:42
Focus on the Pin assignments, not the wire colours as these can change.

Rear Light Cluster on the body:
Note the Common Earth is on Pin 3:

Brake:
Pin 2 Live

Reversing:
Pin 1 Live

Rear Tail / Side Light:
Pin 5

Indicators:
Pin 4

Fog Lamps These I believe are in the bumper area and these are on Pin 1 and the Earth on Pin 2.
What are the wire colors because I can't find reference to them anywhere.

User avatar
GiveMeABreak
Forum Admin Team
Posts: 21594
Joined: 15 Sep 2015, 19:38
x 2170

Re: 2010 citroen c4 grand picasso towbar

Post by GiveMeABreak »

The pin numbers are marked on the black wiring plugs if you look carefully. As I said - the colours of the wires are often changed on PSA cars, so may not correspond. Always use the pin number as that is 100% accurate.

Look here for the numbers:
plug pin.PNG