Wiring Harnes?

[nosnibor]

Hi Just about to fit a witter towbar to my citroen xsara estate, but haven't a clue where the wiring harness is to fit the electrics :blink: . I know it may seem silly but can anyone point me in the right direction

Many Thanks

[kfk]

You dont say how old your xsara is, however the wiring harness runs down the off side of the vehicle to behind the right rear lamp and then under the boot carpet, across the rear of the car to the left rear lamp.

[Johndouglas]

Over the years the fitting of towbars has become easier. Offer up the bar, and the captive nuts are there ready for the bolts. Not so the electrics. They are more complicated than on earlier cars. Find out first whether or not your car is multiplexed. If it is, be on the safe side and use a 7-way relay. Are you wiring for 12N and 12S? if so, the easy way is to use a Smartcom with a supply taken directly from the battery.

[nosnibor]

Hi thanks for the replies, its a 2002 model. Will have a look at the weekend !!!!!!!

Thanks again

[nosnibor]

Fitted the towbar today but the electrics have got me. It is 12 N rear Audible relay electrics that i am trying to fit

 

Fitted to the outside, under the car at the opposite side to the exaust there is a Grey male clip/box with electric wires going into it but nothing coming out of it. The wires going in are coloured Pink, Yellow, (Orange*, Grey*), White and Brown.

 

I have followed theese wires back into the boot and into the area behind the drivers side rear lights. It is covered in black shrink wrap at this area. the wires then show themselves and travel along towards the front of the car.

 

Following it further back the wires a re coloured (Red* Green*) Yellow White Pink, and Brown. I got confused at this point as two of the wires had changed colour, i can only surpose that there has been a join made somewhere within the shrink wrap area but the total number of wires are still the same.

 

Is the grey Box/Clip under the car a fitting to put towbar electrics on to, if so what would the name of the female clip be that i would require? If it is not where the towbar electrics go onto then where in the wires should i splice into to make the connecrtions and what colours would go with what.

 

The 12n Socket pin configuration is wired like this.

 

Yellow (LH Indicator)

Green (RH Indicator)

Blue (Fog Lights)

Brown (RH Side Lights)

Red (Brake Lights)

Black (LH Side Light)

wHITE (Vehicle Earth)

 

I would appreciate any help you could give on this unfortunatly i dont know if the car is multiplexed or not how would you know or find out?

 

Again many thanks

[Johndouglas]

I believe Xsaras were the first vehicles to be multiplexed so I would work on the assumption that your car has it. The easiest way to run the wiring is to use a 7-way relay (see them at http://www.towsure.com/default.asp?c=H22&x=10&y=9 The way I did my C5 was to run a cable from the battery through a 30amp fuse close to the battery. To save drilling holes in the bulkhead and lifting the carpet, I ran the cable under the car, inside the conduit covering the fuel lines, up over the fuel tank, through the plastic cover under the back seat and into the boot. The 7-way was fitted into a cubby-hole in the boot and the supply wire was connected to it. I then accessed the rear light clusters and used piggyback connectors to each bulb supply. The wires were connected to the respective terminals on the 7-way. The 7 core cable from the socket came through the boot floor suitably grommetted and connected to the wires fitted to the relay. This way, the original lighting works without the main computer being aware that there is extra load. I tow a caravan, so I also need a supply for running a fridge and charging an on-board battery. That's achieved by using a Smartcom which is also fed from the battery. To ensure a full 12volts for the fridge, the cable needs to be substantial. Since I had two wires running together, I enclosed them in PVC tubing.

[iannez]

the last one i fitted to a picasso the electrics just piggy backed into one of the rear light clusters. just unpluged rear lamp multiplug, pluged in tow bar electrics (back of tail lamp) and pluged tail lamp multiplug into tow bar harnes. had to bolt 1 earth to the back panel and ran a wire up inside l/h parcel shelf trim for indicator buzzer. simple as that. cant see why you can't get one like this for xsara.