need additional door locks
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=98501
Printed Date: May 12, 2025 at 11:58 PM
Topic: need additional door locks
Posted By: dslick
Subject: need additional door locks
Date Posted: October 31, 2007 at 7:05 PM
Hey everyone, I have a 94 318I. And I'm really having issues even after reading lots of topics here. I've already looked at 5 threads covering the wiring and such for the 12 pin plug which controls the alarm in a non-alarm equipped BMW.
But my problem is that I cant seem to located the "WHITE/ red" lock and the "blue/red" unlock wire on the 12 pin black plug.
All I see is a heavy gauge "Red wire/white strip" and a light gauge "Red wire/blue strip". So are these the correct ones or do I need to follow the wiring for the UK models?
Like in this thread
Replies:
Posted By: howie ll
Date Posted: November 01, 2007 at 6:36 PM
Your car is an E36 you have the colours for an E46. Drop glovebox, lok at top level of CPU behind, centre quadplug, open up, pin 17 is unlock and blue with red, pin 4 is opposite and should (in England for that year anyway) be vacant, if not there will be a red white cable there. Anyway use pin 4 for the lockwire, both are positive going and extend that pulse for window close. PS You can only test these cables with doors shut.
Posted By: dslick
Date Posted: November 02, 2007 at 2:31 PM
Hey I found the cables! omg they were just really deep in there, knowing pin 17 and 4 really helped. But I test them for grounding or 12V, and they don't seem to have anything. The door locks still work but there doesn't seem to make a pulse.
So for wiring it, do I just directed splice the cables from the alarm box? Or do I need to make a double relay?
thanks for your help.
Posted By: dslick
Date Posted: November 02, 2007 at 2:47 PM
Oh and BTW, I don't have the Stock Alarm, so if that helps in any way?
Posted By: howie ll
Date Posted: November 02, 2007 at 6:20 PM
Make sure alarm will give a pos. pulse and you can extend that for win/close
Posted By: dslick
Date Posted: November 02, 2007 at 7:36 PM
The alarm is a 12V and 12V. They ground out one side.
So i guess that means im required to dual relay to send a 12V pulse to one side at a time?
Posted By: dslick
Date Posted: November 04, 2007 at 1:29 AM
Thanks a lot Howie, I managed to get it to work after much stressing.
For the record so people won't have to ask questions like my retarded questions, they can follow my example.
For a 1994 BMW 318I (4 door without the stock alarm system)
Mine is from the USA, but it follows the UK standards:
- You must get the wires from the yellow plug behind the glove box.
- Blue with red stripe = pin 17 - Unlock - Send 12V pulse
- White with red stripe = pin 4 - Lock - Send 12V pulse
- You are required to use the double relay setup, wired to send a momentary 12V pulse. DO NOT Ground it out while it isn't activated.
And that is all, its really simple to wire. I just didn't understand the first time. Thanks again Howie!
Posted By: howie ll
Date Posted: November 04, 2007 at 3:08 AM
You do realise that if you had a timed aux on that alarm you could set it for about 15 secs (if 4 door, 8 if 2 door ) to close your windows, apply it to the lock relay, also if your alarm has a timed aux that turns on with arming again via 2 1N4001 diodes to lock and unlock for 3 secs will deadlock vehicle.
|