Track car wiring loom

[Andye]

I'm stripping everything out of the loom that I don't need for an MOT, I've come across a small black box in the loom with green multi pin plug in connectors and a grey round plug, can't find it in the loom diagrams in the Haynes manual, anyone know what it's for? Numbers on it are BMW 65.75-1381 286 and Sachs 014386007103. Are there any links to doing this sort of thing for a track car with clear colour pictures? Cheers, Andy

[mike_sayer]

What engine, body and year is your car? I've done the same thing for my track car and i've made a full colour wiring diagram of the cut-back loom which might help, but will just serve to confuse for a different car...

[Reeeedish]

That unit is the BMW theft alarm control unit.

It may act as a immobiliser (can sometimes do on the E28's)
If you unplug it and then the car won't start then you will probably need to join the 2 main green wires going in on that green plug.
I can't remember the specifics as i'm not in front of one right now but someone like Brain Moore will be able to help on wiring like this.

James

[Andye]

Thanks for the replies, car is an M3 but the engine loom is a stand alone system, so won't interfear with anything else. All I want left is the dash, lights, indicators etc. If that is the alarm it can come out as the ignition will pick up the engine loom and as far as I know all E30s have the same colour coding for all of the other functions that I require so any colour diagrams would be ideal, Thanks, Andy

[mike_sayer]

PM me an e-mail address Andy and i'll send it over. It's for an '88 325i, and my diagram is split into vehicle loom and engine loom so that should help (plus a diagram that shows the fusbox wiring paths). I have seen different wiring colours on different cars, and diagrams supposedly for the same car with different colours

[Andye]

Cheers