1992 320i keyless entry

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=62798
Printed Date: July 13, 2025 at 5:09 AM

Topic: 1992 320i keyless entry

Posted By: stevenlusk
Subject: 1992 320i keyless entry
Date Posted: September 17, 2005 at 3:31 AM

i am currently working on a german spec 1992 320i, ther is no unlock or lock switch, it has central locking the only way the power locks work is if you use the key in the drivers door, how would i go about setting up the keyless entry, i need to know how i would set up the relay any help would be good

Replies:

Posted By: iskidoo
Date Posted: September 17, 2005 at 10:24 AM

You most likely will need to add an actuator and 2 relays to turn the mechanical unlocking action into an electrical one. Use this diagram as a guide https://www.commandoalarms.com/doorlockactuators.pdf

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Steve G

Posted By: Evolution-UK
Date Posted: September 17, 2005 at 10:40 AM

Is this an E36 BMW ?

Do the doors lock if you press the button down on the top of the drivers door?

If the answer is yes to both these then you need to wire for +12v pulse and tie into the wires at the vehicles control unit. This can be found in one of 2 places. Either behind the drives lower dash (black box with white plug) or behind the glovebox (black box with yellow plug)

Posted By: stevenlusk
Date Posted: September 18, 2005 at 7:59 AM

yes the doors will lock but they will unlock right away unless the door is shut, i just need to know if that 2 relay diagram will work on this, i think they need a negative puls for lock and unlock

Posted By: Evolution-UK
Date Posted: September 18, 2005 at 8:18 AM

if its an E30 then its neg pulse if its an E36 then its pos pulse

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