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Alarm wiring
Posted: Thu Oct 06, 2016 12:00 pm
by e30-unit-soldier
I'm hoping to fit a ai606 to my cab this weekend. I have the alarm wiring diagrams but I need to find all the relevant cables on the car. From memory I do know all the wires except the immobiliser are accessible from behind the glovebox. Can someone please tell me the wire colours for the following;
Central locking
Indicators
Door pin switch
Boot pin switch
Interior light
And a good live feed for the power supply.
I did find a old post a while ago but can't find it for the life of me so all help will be greatly appreciated.
Re: Alarm wiring
Posted: Thu Oct 06, 2016 12:31 pm
by ChrisHC
Don't do it, it will bring you nothing but grief, use a steering wheel lock instead.
Re: Alarm wiring
Posted: Thu Oct 06, 2016 1:51 pm
by Brianmoooore
In the order you've listed:
Yellow/blue (lock) and green/blue (unlock), emerging from behind speaker trim.
Blue/red and blue/black, at the dash loom socket next to the accessories socket.
Brown/purple or brown/blue, from behind the speaker panel (use either).
Not accessible on saloons, without going right into the boot lid, but brown/blue socket on front of rear left wheel arch on tourings.
Brown/purple from behind speaker panel. (Same as door pin switch.)
Red/yellow (fuse twenty eight) from accessories socket, or, if you want a dedicated supply, the wire is present, and you don't have heated seats, the white/brown on pin U of the accessories socket from fuse 16.
Re: Alarm wiring
Posted: Thu Oct 06, 2016 7:57 pm
by e30-unit-soldier
ChrisHC wrote:Don't do it, it will bring you nothing but grief, use a steering wheel lock instead.
True but flashing indicators and remote central locking make me feel cool

Re: Alarm wiring
Posted: Thu Oct 06, 2016 8:04 pm
by e30-unit-soldier
Brianmoooore wrote:In the order you've listed:
Yellow/blue (lock) and green/blue (unlock), emerging from behind speaker trim.
Blue/red and blue/black, at the dash loom socket next to the accessories socket.
Brown/purple or brown/blue, from behind the speaker panel (use either).
Not accessible on saloons, without going right into the boot lid, but brown/blue socket on front of rear left wheel arch on tourings.
Brown/purple from behind speaker panel. (Same as door pin switch.)
Red/yellow (fuse twenty eight) from accessories socket, or, if you want a dedicated supply, the wire is present, and you don't have heated seats, the white/brown on pin U of the accessories socket from fuse 16.
My car is a cab so would that be same as a touring for boot pin?
Sorry for the retarded question where's the accessories socket?

Re: Alarm wiring
Posted: Fri Oct 07, 2016 9:51 am
by Brianmoooore
Cab. will be the same as a saloon, unfortunately.
Accessories socket is on the left behind the glove box area.
Re: Alarm wiring
Posted: Fri Oct 07, 2016 1:10 pm
by e30-unit-soldier
Well I'll give it a pop might just be easier to put in a secondary pin for the alarm....
Also forgot to mention I need a live ignition feed that remains live while car is started but goes out once key is out?
Would I find that on the accessories socket?
Re: Alarm wiring
Posted: Fri Oct 07, 2016 11:25 pm
by Brianmoooore
Only wire that is only live when the engine is running is the blue wire from the alternator D+ to the instrument cluster and is present at pin C of the accessories socket.
If you mean a supply that is live when the ignition switch is on (regardless of whether the engine is running or not) and dead when the ignition switch is off, then there is the green/white on pin F, which comes from fuse 10.
Re: Alarm wiring
Posted: Sat Oct 08, 2016 4:10 pm
by e30-unit-soldier
Thanks Brian.
I need the ignition live only to prevent the alarm from re-arming itself. It's for a signal to let the alarm know the car is started etc....
Re: Alarm wiring
Posted: Sat Oct 08, 2016 7:37 pm
by fixedwheelnut
e30-unit-soldier wrote:Thanks Brian.
I need the ignition live only to prevent the alarm from re-arming itself. It's for a signal to let the alarm know the car is started etc....
Pin off from the Starter motor solenoid supply terminal 50 on the ignition switch
Re: Alarm wiring
Posted: Sat Oct 08, 2016 7:56 pm
by Brianmoooore
e30-unit-soldier wrote:Thanks Brian.
I need the ignition live only to prevent the alarm from re-arming itself. It's for a signal to let the alarm know the car is started etc....
The green/white wire on the accessories socket will be ideal for that. The alarm only needs to know that the ignition is on, not if the engine is running.