Towbar electrics for Xsara Phase II Saloon

[einsteinagogo]

I have managed to acquire an original Citroen Part Number CIT-1319 CIT-1320 which is the original Electrical kit for towbar Xsara Multiplex for Saloon/Coupe/Estate but one thing which oddly is missing is the 12N socket easy enough to obtain I mention its odd because a few stockists I contacted have the complete kits but are also
Missing Part A in the kit which is the 12N black socket the 12S is in the kit, the white one - so I was curious as to what the pre wired cable is suppose to connect to!

If I cannot get a suitable matching connector Ill have to cut wires and manually connect up a 12 N

[wheeler]

Do yourself a favour, ditch the 7 pin sockets & upgrade to the newer 13 pin plug. The 13 pin connectors are way superior to the old ones.

[einsteinagogo]

Thanks for the suggestion, but the second hand trailer probably then has a 7 pin, and I cannot tow it when I purchase it!

[wheeler]

Plenty of adapters available to convert in both directions, can be handy to keep in the car in case you need to tow a borrowed trailer for example.
https://www.halfords.com/motoring/car-a ... 97494.html

I would also recommend converting any trailers you have to 13 pin, even if its only for lighting.

On the Xsara, even multiplexed ones i believe the 12N socket just connects directly into the rear lights.

[einsteinagogo]

Okay so now had the time to fit the working loom I also replaced the 12N with 13 pin socket - but let’s not talk trailers yet! Because I’ve got a weird problem after fitting the wiring loom kit the following now occurs

Right indicator selected - right indicator flashes and so does (from rear) left fog light ?

Rear fogs on - right fog on, left fog is off ?

In the kit on the left side loom is a flying lead which I assume is to connect to spade connector like it did on the right side, there was a grey wire documented in instructions to connect to red wire on the existing light loom

So I wonder if my issue is this not connected wire ?

Anyone any ideas or faulty relays?

[wheeler]

Can you upload a pic of the wiring instructions?

[einsteinagogo]

Thanks for your respone and time.

I can do better, than that'll scanned them and uploaded.

The PDF I've scanned is here

https://cyrusconsultantscouk-my.sharepo ... w?e=XcGZUh

The kit as far as my brain can see is rather strait forward, as the lights are removed, lighting cables connect to new loom, which then daisy chains to original lights on left and right of car.

But why the left fog flashes, when right indicators are selected, and trailer is not connected, unless something is wrong with an earth bulkheard, or relay is faulty.

and I'm now missing a fog light (left) when fogs are switched on, again no trailer connected at this time.

I noticed this issue when looking at loom, there was a spare wire, (Page 5) which wasn't mention in the document ? see below you can see it hanging out the left side, I would not know where to connect this ?

Not sure if this is the issue ?

Thanks

Andy

[wheeler]

I’ll get a proper look at the instructions later as im just on a phone at the moment but my initial guess would be it may be related to the rear fog lamp cut off wiring. Some towbar sockets have a little micro switch in the socket that cuts off the rear fog lamps on the car when a trailer is plugged in.
See this post> viewtopic.php?p=835605#p835605

[wheeler]

Can you confirm if your Xsara has the horn button on the steering wheel or is it on the end of one of the stalks?

[einsteinagogo]

No micro switch in this towbar socket - but nothing is connected to towbar socket and this weirdness occurs!

Also not sure how modern the micro switch is as this car is 52 and the kit is from 2006, and no mention of it or supplied in kit

The horn is on the centre of steering column

[wheeler]

No micro switch in this towbar socket - but nothing is connected to towbar socket and this weirdness occurs!

Then it just wont be used. but looks like the kit is compatible with sockets that have the fog cut off function.
How many wires you got at your tow socket? According to the instructions you have 8? well its a 7 pin socket (i know you have changed to 13 pin). look at the instructions again. the extra wire will be for the fog cut off i would imagine.
I suspect there is a mix-up with the blue & yellow/brown wires.
Disconnect these 2 wire & see what happens then.

[einsteinagogo]

Yes, I noticed that, this is a 7 pin cable, if you look at the first photo, 7 pins only. So there is only 7 wires, and 7 pins, and that picture shows a 7 pin socket, not 8.

No idea why those instructions, detail 8, when the kit only has seven wires in the loom.

The additional wire, with a connector is located near the rear left lights, so not sure what it's supposed to be connecte to ? and where ?

but this is not about the trailer connected, it's lights on the actual car, have gone wonky since connected the kit, not checked the trailer yet, wanted to sort out the car electrics, because towing without a trailer, right indicator flashing left fog is just odd ?

and my thinking was if I had wired up the socket incorrectly, with nothing connected the lights on the car should function correctly. If I wired up the socket incorrectly I could understand trailer lights not working correctly.

Could a duff relay cause this, not sure who those relays affect the current rear light car arrangement if any.

Disconnect these two wires from where, they are not connected, nothing is connected to electric 12N socket. (don't have a yellow/brown wire)

or is the loom wired incorrectly ?

It seems odd to me, lights work perfectly on the car, connect up the lights with the connectors, and lights appear to work incorrectly. If it is the relays, might as well purchase another kit, as they seem like rocking horse pooh and cost > £100 if you can find them

[wheeler]

OK so the instructions show 8 wires at the trailer socket, on your harness which colour is missing on your harness? Do all the other colours on your harness match the instructions?

[einsteinagogo]

Yes, all other colours match the harness at the 7 pin socket (now 13 pin), but I don't understand why this socket which is not connected causes light issues on the car now ?

Photo above is the original connector before I chopped it off, it only has 7 wires, and 7 pins

Why does the harness when connected cause these weird light issues ? - that should not be anything to do with the 7 pin socket ?

I'm going to remove the relays, and see whats happens, I could also obtain the exact same wiring harness, and see if that is the same.

[einsteinagogo]

This morning to try and troubleshoot, I removed the black relay in the kit.

The results were, no right indicator on the rear of the car, and right indicator flashed fastly.

Removing the RED relay, did something different and flashed the fog and brake lights

I also had a look at this flying lead, which is yellow/brown which comes from the new light connector, I checked the position on the original wiring loom/light connector position 7, and there is no wire or connection.

So, maybe this is looking for an input from somewhere ?