1989 factory fitted alarm.
Moderator: martauto
Hi, iv got a 89' 325i cabby which has 2 locks on the drivers door, 1 is the main to open/lock the door the other is, i think, an alarm which a magnectic key goes in/out to activate and deactivate an alarm fitted from factory, the guy i bought it off said the never used it. How does this work, iv read the manual but don't undestand it, its says to change variable code and owners code! How can i check to see if its working? Worried i might put the key in and something other than activating it might happens.
it is a magnetic alarm i have one fitted to my touring . dont worry about changing codes i havent . just put the alarm key in and out and you will get a red warning light come on in the lock and there is one above the rear bumper underneath the no plate .
Thanks mate will try it out tommorow.roley wrote:it is a magnetic alarm i have one fitted to my touring . dont worry about changing codes i havent . just put the alarm key in and out and you will get a red warning light come on in the lock and there is one above the rear bumper underneath the no plate .
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BruceVeedub
- E30 Zone Newbie

- Posts: 224
- Joined: Sat Aug 16, 2008 11:00 pm
- Location: Nottingham
wondered what the one by the number plate was!
When I had the door card off I noticed all the mechs behind the drivers door lock - would it cause any problems if you removed, plated and sprayed - I'm not running the original alarm anyway - bl00dy ugly thing on the door anyway!
When I had the door card off I noticed all the mechs behind the drivers door lock - would it cause any problems if you removed, plated and sprayed - I'm not running the original alarm anyway - bl00dy ugly thing on the door anyway!
- Brianmoooore
- E30 Zone Team Member

- Posts: 49358
- Joined: Mon Jan 10, 2005 11:00 pm
The immobiliser connection to the main car loom is above the middle of the glovebox. There should be a couple of green wires hanging down from the loom with a two pin plug on it.
There will be another plug connected to this with probably a green and a green/red wire coming from it, which come from the immobiliser control box mounted above the engine ECU.
If you are lucky, there will be a similar plug fitted with a loop of green wire tied up to the loom nearby. Unplug the green and green/red wire, and plug the loop in its place. If the loop isn't there, cut the green and green/red wires a couple of inches from the plug, and make your own loop.
There will be another plug connected to this with probably a green and a green/red wire coming from it, which come from the immobiliser control box mounted above the engine ECU.
If you are lucky, there will be a similar plug fitted with a loop of green wire tied up to the loom nearby. Unplug the green and green/red wire, and plug the loop in its place. If the loop isn't there, cut the green and green/red wires a couple of inches from the plug, and make your own loop.
wow u seem to know alot about this sooo, i have not tried to put the key in, i have moved the couple of the dials around (before i actualy knew what the key was for), will it still work and can anything negative happen when i put the key in?Brianmoooore wrote:The immobiliser connection to the main car loom is above the middle of the glovebox. There should be a couple of green wires hanging down from the loom with a two pin plug on it.
There will be another plug connected to this with probably a green and a green/red wire coming from it, which come from the immobiliser control box mounted above the engine ECU.
If you are lucky, there will be a similar plug fitted with a loop of green wire tied up to the loom nearby. Unplug the green and green/red wire, and plug the loop in its place. If the loop isn't there, cut the green and green/red wires a couple of inches from the plug, and make your own loop.


