xsara picasso 05 multiplex, towbar electrics Help.

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jerseykevsweden
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xsara picasso 05 multiplex, towbar electrics Help.

Post by jerseykevsweden »

Hi there,
I was wondering if I could have a bit more help than what I've read regarding the electrics.
I have fitted the towbar and am now going to attempt the electrics. 7pin by the way not 13pin
I have a bypass relay which I am going to use. I have two black wire that goes from the 7pin socket
I realise that one black wire is going to the left side of the cars lights and the other side is going to the right side

So black cable Nr 1 has the colour wires brown ,red and green ,does this connect to the drivers side or passenger side.
Please note my car is Lefthand drive, with drivers side on the left side,not right side like in the UK.

Cable nr 2 has colours yellow, white, black and blue. I just want to get a heads up, before I attempt this, just in case it is not so obvious.
Do you have to take out,removed the back light casings ? or just disconnect the wire harness ,cluster what ever its called.
I have instructions for the bypass relay and realise that I have to run more wires over to the other side. And also run an extra cable from battery with a 15amp fuse to power the relay.

What I am really wondering here, do I have to mess around, reconnecting the battery so someone puts on the lights ,pushes brake peddle , operates indicators to check what each wire is doing or not ??? Little confused and afraid I am not going to know whats what All help much appreciated.
Kind Regards Kevin
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GiveMeABreak
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Re: xsara picasso 05 multiplex, towbar electrics Help.

Post by GiveMeABreak »

Citroen don't supply a towing wiring harness kit or BSR (trailer relay / fuse unit) for the Xsara Picasso, so you will have to rely on the fitting instructions that your supplier of the harness provided. It's impossible for us to know what kit you have and how it should be wired up to be honest.

I can probably provide you with a wiring diagram of the rear lights if that helps - but I will need your VIN Kevin.
jerseykevsweden
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Re: xsara picasso 05 multiplex, towbar electrics Help.

Post by jerseykevsweden »

Hi Marc thanks.
The vin nr, which must be the one in the little square on the window. It is
VF7**************[VIN obfuscated, can be read by forum staff]. I see the wires on the left side and the right side for the lights.
There is more on the left side, which in my casé is drivers side and battery. there is a total of 8 on the left side,
red, green,yellow, white ,Bluegreen together, purple and one yellow-green earth
RIGHT side red,white,lightblue,darkyellow,orange and one yellowgreen earth.
Where I am confused ,I have the two black cables from the 7pin one cable consists of red,brown and green, the other is
yellow white back and blue and the all connect into the by pass relay, but then what ,I have to work out all the other obove colours.
.
Also which is cracking me up, I tried registering to the Citroen Picasso owners club and There is a problem, I can not register to become a member,
on there they have diagrams and step by step instructions that I can not access because I am unable to join. I have now sent a message to their admin.
Appreciate it if you can send me the diagram. and some advice ,if you can point me right. I am not scared to do this job, I just want to get the connections hundred procent right.
jerseykevsweden
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Re: xsara picasso 05 multiplex, towbar electrics Help.

Post by jerseykevsweden »

Just sent the vin, They will not show it, so this does not get me anywhere.
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Re: xsara picasso 05 multiplex, towbar electrics Help.

Post by GiveMeABreak »

It’s fine, I can see it ok as only staff are able to see it for your own protection.

Leave it with me - just having dinner 👍
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Re: xsara picasso 05 multiplex, towbar electrics Help.

Post by jerseykevsweden »

Hello Mark, Have you forgotten ??
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Re: xsara picasso 05 multiplex, towbar electrics Help.

Post by GiveMeABreak »

No, a long dinner (I was cooking it as well as eating it) :rofl2:

Sorry - just replying to a lot of posts. I'll get onto it now.
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Re: xsara picasso 05 multiplex, towbar electrics Help.

Post by GiveMeABreak »

Diagrams removed - provided colour codes instead:

viewtopic.php?f=3&t=62822#p611460
jerseykevsweden
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Re: xsara picasso 05 multiplex, towbar electrics Help.

Post by jerseykevsweden »

Thanks Marc, There is no way I can understand this in a million years. I have 8 colours on the left and 6 colours on the right.
I need a simple guide. Surely someone has done this before.
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Re: xsara picasso 05 multiplex, towbar electrics Help.

Post by GiveMeABreak »

Looks like I'll have to do the lookup for you then, I have removed the diagrams as they are obviously not going to help you.

Here are the colours and pins for the rear wiring for the car - obviously nobody here is going to be able to help you with your wiring kit colours as we cannot know what they are - you need to get wiring instructions from the maker, then match them up to the light I have given you below. They all should supply these otherwise you won't know what goes to where. If you don't have them, I suggest you look up the model number of the harness and go to their website / see if you can get a copy of the fitting instructions.


Brake Lights:
Right - Pin 4 YellowPower
Right - Pin 6 Green/ Yellow Earth
Left - Pin 4 Blue Power x 2 (1 to high level brake light, 1 to left brake light)
Left - Pin 6 Green / Yellow Earth

Rear Indicators:
Right - Pin 2 White, Power
Right - Pin 6 Green / Yellow Earth
Left - Pin 2 Yellow, Power
Left - Pin 6 Green / Yellow, Earth

Reversing Lights:
Right - Pin 3 Blue Power
Right - Pin 6 Green / Yellow Earth
Left - Pin 3 white Power
Left - Pin 6 Green / Yellow Earth

Tail Lights: (note that the rear wing tail light cluster has 2 wires in pin 1 below to supply the set of tail lights on the tailgate clusters) Therefore I am only including the wing mounted set below:

Right - Pin 1 Red Power (x2)
Right - Pin 6 Green / Yellow Earth
Left - Pin 1 Green Power (x2)
Left - Pin 6 Green / Yellow Earth
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Re: xsara picasso 05 multiplex, towbar electrics Help.

Post by RichardW »

I was writing this, but Marc has beaten me to it... although info for fog lights is needed:

It’s not too hard, once you get your head around the diagrams! Items 2635 and 2630 are the Right and Left hand clusters. The diagram shows the wires going in, the pin position at the connector, and the two letter code above the wire is the colour (in French of course!). The VJ (Verte-Jaune / green yellow) wire connected to pin 6 is common on all the diagrams, so will be the earth. Taking each in turn:

Brakes:
Right – Yellow wire on pin 4
Left – two blue on pin 4
Indicators:
Right – White on pin 2
Left – Yellow on pin 2
Reverse:
Right – Blue on pin 3
Left – White on pin 3
Side lights:
Right – Red on pin 1
Left – 2 green wires on pin 1

Another diagram is needed for the fog lights – although they appear to be in the rear clusters, so the only pin left is 5, so this must be the fogs!
For the 7 pin socket, assuming EU wiring is the same as UK, the wire colours are:

Yellow – Left hand indicator
Blue – Fog
White – Earth
Green – Right hand indicator
Brown – Right hand tail light
Red – brake lights
Black – left hand tail light
So your No 1 cable (brown / red / green) goes to the RH side of the car; No 2 cable (yellow, white, black and blue) goes to the LH side of the car.
jerseykevsweden
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Re: xsara picasso 05 multiplex, towbar electrics Help.

Post by jerseykevsweden »

Firstly thank you both so much, This is going to help. I am going to check these colours with what I have done testing them
To see what matches what seems strange etc.
jerseykevsweden
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Re: xsara picasso 05 multiplex, towbar electrics Help.

Post by jerseykevsweden »

Hi, Richard W,
When you said that the brown ,red ,green goes to the right side of the car, need to check this with you. because my car is lefthand drive,so drivers seat and battery is on the left side. The left side light wires is 8 and the righthand side is 6 wires. There is another wire loom on the left side,so more cables in general and also the 12v back socket and boot light are on the left.
This is where I am confused you say you split the two 7pin cables left and right but all of them have to go in the bypass relay next to each other. Cars is 2005 and multiplex.
When I tested the lights with a 12v tester. wires are on the Citroen
Left Side Right side
L/H Indicator.....Yellow R/H indicator.....White
L/H tail...........Green/Red R/H tail.......Red Is the Tail lights combined on the left side ?
L/H stop light.... Green/Blue R/H stop light....seemed to be blue but did not flash ? Is the stop light wires together for both sides ?
Reverse .........White Reverse .....Blue
Fog light unsure possibly ...Blue
this side leaves a purple and the YellowGeen this leaves an orange ? and an Yellow/green earth on this side ,rightside
earth left side.
AS you can see I am confused as to what wires I need to take over from left side to right side or perhaps d Io not need to., So basically the main cluster of wires seems to be on right side and that is where I will put the relay and join into the wires, but what about the other side ????
jerseykevsweden
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Re: xsara picasso 05 multiplex, towbar electrics Help.

Post by jerseykevsweden »

Also I know about running a thicker wire from the battery with a 15amp fuse and connect into the bypass relay, And earth the wires that need to be earthed. Its all just about connecting to one side or both ,And getting the wires correct, There is no guarantee that the 7pin wires that I end up connecting to are absolutelly correct anyway, and I haven't got a trailer light tester ,just incase something is wrongly connected.
jerseykevsweden
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Re: xsara picasso 05 multiplex, towbar electrics Help.

Post by jerseykevsweden »

Also just studied now your wiring, not totally matching with mine, Give me a break admin, Seems a bit different as well.
I am scared to proceed until I know 100, per cent what's what. If you can both help get the confusion that I have ironed out, then I will attempt to do this. I am by no means a complete novice and just want to be sure before I start.