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Re: Need help with alarm port wires on 1991 535i (archive)
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Posted by detalanal on May 04, 2000 at 03:13:31:

In Reply to: Need help with alarm port wires on 1991 535i posted by R Kieffer on April 30, 2000 at 14:47:04:

I've installed an Alpine in my 90 525. I was able to get all the features of the car and alarm to function including double lock and regular lock/windows up funtions. Unfortunately I did not document the install. Here's what I believe is the wires you listed. The wiring of the 90 is different to the 91. Use a DMM to test the lead before actually connecting the alarm to it.

: Alarm port near battery:

: purple/white: 12V in acc., run and start
: red/gray: 12V at all times
: brown/gray/yellow: driver's door switch
: brown/blue/yellow: passenger door switch
: brown/violet/yellow: rear door switches
: red/white: positive trigger trunk open (may need to invert the signal here to use for your alarm.
: black/blue: Alarm horn (if factory equipped; ignore unless you can find the other end under the car hood)
: brown/orange: Ground
: brown/black/orange: 12V at lock and deadbolt key positions
: blue/brown/yellow: ?



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