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power door locks on bwm

Printed From: the12volt.com
Forum Name: Car Security and Convenience
Forum Discription: Car Alarms, Keyless Entries, Remote Starters, Immobilizer Bypasses, Sensors, Door Locks, Window Modules, Heated Mirrors, Heated Seats, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=12834
Printed Date: August 29, 2025 at 12:37 PM


Topic: power door locks on bwm

Posted By: CraigC
Subject: power door locks on bwm
Date Posted: April 27, 2003 at 11:20 PM

Is there something special for wiring a alarm to a 92 BMW 535 power door locks, if so, how is it done??

craig




Replies:

Posted By: Velocity Motors
Date Posted: April 28, 2003 at 9:17 AM

Nothing special other than some warnings:

  • POWER LOCK|WHITE/ RED / yel           |+  |anti-theft plug        
    POWER UNLOCK|blue/RED / yel      |+  |anti-theft plug

Do not operate locks by remote with door open or deadbolted to prevent possible damage to servos. 

Anti-theft plug or module located under rear seat on passenger side. Door wires also found at general module under rear seat on driver's side. Be careful handling this module, as rotating it can cause underseat grommets to suck out, allowing eventual water damage to the electrical system.



-------------
Jeff
Velocity Custom Home Theater
Mobile Audio/Video Specialist
Morden, Manitoba CANADA



Posted By: CraigC
Date Posted: May 01, 2003 at 12:04 AM
I had the alarm installed and I connected the wires according to wiring descripition and I think it blew the driver for the door locks. I tested it and there is no output from the alarm. when the doors are locked there is a constant 12 volts on the wire and nothing on the unlock wire. but when unlock I have the same, unlock wire is hot. I checked all the motors and they all seem to work fine, none stuck. is this a thing with the car??? this is what I think that blew the driver.  Anybody know where I can get it fixed??? or is it cheaper to buy a new brain unit?????



Posted By: Velocity Motors
Date Posted: May 01, 2003 at 11:10 PM
The BMW requires a (+) signal for the actuation of the doors locks. Did you have the alarm programmed for (+) output ? Does the alarm have alternate polarity otuputs of just (-) output ?

-------------
Jeff
Velocity Custom Home Theater
Mobile Audio/Video Specialist
Morden, Manitoba CANADA



Posted By: CraigC
Date Posted: May 02, 2003 at 1:23 AM
I had it set up for (+) signal and it worked great but just stopped. I would like to get it fix



Posted By: Velocity Motors
Date Posted: May 04, 2003 at 10:01 AM
Are you still getting a (+) signal from the CPU of the alarm ?

-------------
Jeff
Velocity Custom Home Theater
Mobile Audio/Video Specialist
Morden, Manitoba CANADA



Posted By: CraigC
Date Posted: May 05, 2003 at 12:26 AM
nope, nothing. there the (+) signal going in to the alarm but nothing coming out


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