Computer wiring

scrappydoo · Post by **scrappydoo** » Tue Feb 09, 2010 11:59 am

The computer on my '87 GTI 8v has some wires that have detached from the wiring plug. Does anyone have a diagram for which wire goes where??

Vanny · Post by **Vanny** » Tue Feb 09, 2010 6:01 pm

Have you got a Haynes? THe back pages have wiring diagrams in them, pretty sure the older Haynes covers the Fuel computer.

scrappydoo · Post by **scrappydoo** » Wed Feb 10, 2010 4:35 pm

No, I mean the door open visual display next to the coin holder.

scrappydoo · Post by **scrappydoo** » Fri Feb 26, 2010 5:26 pm

Or door open display for short.

BX Bandit · Post by **BX Bandit** » Fri Feb 26, 2010 5:34 pm

erm, I think I have this some where. I\'ll try and find out!

scrappydoo · Post by **scrappydoo** » Fri Feb 26, 2010 5:44 pm

Great,

thanks very much!

Vanny · Post by **Vanny** » Fri Feb 26, 2010 6:07 pm

A very quick Google brings you to this website;

http://citroen.podolsk.ru/bx/docum/haynes/

ignore that the text on the screen is not in english, the links are. The top link is to the electrical diagrams in the Haynes manual.

Simon B · Post by **Simon B** » Fri Feb 26, 2010 8:23 pm

Vanny wrote:A very quick Google brings you to this website;

http://citroen.podolsk.ru/bx/docum/haynes/

ignore that the text on the screen is not in english, the links are. The top link is to the electrical diagrams in the Haynes manual.

Blimey, that is quite some resource. Thanks

Vanny · Post by **Vanny** » Fri Feb 26, 2010 10:18 pm

Yeah, Google is amazing!

prm · Post by **prm** » Sun Feb 28, 2010 1:17 am

I hope this may help if your wire colours are the same? Some models may have all green wires instead of orange?? Depending on loom, all pins may have wiring attached.

There should be 15 pins on the cable multi-pin block, most are paths to neutral via the door, bonnet and boot switches. Disconnect the block. Using a small lead light, one end to + and then probe the back of the block to identify correct panel bulb location while operating the switches.

Looking at the block connector, with the wires facing away from you, and the block central locating wedge uppermost..
Pin 1 too the right, (n/c = no connection or, no contact)

1. n/c. possibly linked to 2
2. Orange, o/s/r door
3. n/c
4. n/c
5. Orange, o/s/f door
6. Orange, Group +. Possibly linked to 14
7. Orange, bonnet
8 Blue, illumination +
9 Blue, illumination, negative.
10. Seat Belts
11. n/c
12. Blue, also, possibly orange, n/s/f door
13. Orange, n/s/r door
14. Orange, boot
15. n/c

Apart from the seat belt illumination, any members any idea what the four corner bulb sockets were used for.
Many Thanks

Regards

Vanny · Post by **Vanny** » Sun Feb 28, 2010 10:43 am

i believe there are extra bulbs for 'headlights on', but is suspect this only accounts for the front bulbs?

Given that the BX never had seatbelt warning sensors fitted, i wonder if the panel is from another vehicle, perhaps a CX, in which case the extra bulb functions might be specific to a CX?

scrappydoo · Post by **scrappydoo** » Mon Mar 01, 2010 3:25 pm

Many thanks for that run down. It was the illumination negative wire that had detached. Now good to go again!

Tourist · Post by **Tourist** » Mon Mar 01, 2010 5:53 pm

Vanny wrote:Yeah, Google is amazing!

Yep and it sells all your info like what you search for ...

scrappydoo · Post by **scrappydoo** » Tue Mar 02, 2010 2:28 pm

Bonnet and front driver's door is not showing open when it is on the computer, I'll swap the bulbs around first but any ideas?

When you open the front driver's door doesn't turn on the interior lights either so I went to clean the contact switch near the door hinges but the wires came off and I can't trace then, I'm hoping they're routed from inside the rubber boot downwards.

scrappydoo · Post by **scrappydoo** » Tue Mar 02, 2010 3:50 pm

UPDATE:

Managed to retrace wire but had to wrap a very thin split pin around it and then "fish" it through with a magnet! Interior now come on with the door open but the computer display is not reflecting it still. I've been reading that the display is not actually connected to the door open switches and instead it is a microswitch within the door itself. Well the door panel's already off so what am I looking for and is it easily replaced/repaired?