BMW doorlocks

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Curtis123

Member - Posts: 3

Joined: November 11, 2004

Location: Canada

Posted: November 16, 2004 at 12:47 AM / IP Logged

I am trying to connect a -500ma output from the alarm doorlock module to a 96 BMW Z3. The lock wires will stay +12volts when locked and ground at rest, and the unlock +12 when unlocked, ground at rest. I need to now how to hook up some relays to try and make this work with the alarms keyless. Any suggestions?

Curt

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cgalvin29

Member - Posts: 35

Joined: July 16, 2002

Posted: November 16, 2004 at 2:26 AM / IP Logged

you need to change the polarity of the doorlocks from Negative trigger to positive trigger you will need two relays one for lock one for unlock.

it will go like this.

Pin 86 - Door lock/unlock wire from alarm

Pin 85 - 12+

pin 87 - 12+

Pin 30 - To Door lock/unlock wire on car

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Curtis123

Member - Posts: 3

Joined: November 11, 2004

Location: Canada

Posted: November 16, 2004 at 3:34 AM / IP Logged

I believe that was one of the many ways I tried. Does this not just provide a "pulse" to the door locks? Does this system not need to some how convert from 12volt to a ground status, or will the "pulse" be enough to open it. I noticed after your reply that the alarm may have been set to a single .75 second pulse. Should I program it to the 3 second pulse instead.

Thanks

Curt

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rudbwoy69camaro

Silver - Posts: 350

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Joined: June 10, 2003

Location: United States

Posted: November 16, 2004 at 3:01 PM / IP Logged

Here's some info when I was install a Matrix RS3 in a 318ti:

http://home.att.net/~voerman/

https://www.the12volt.com/installbay/detail.asp?info=alarm&year=1998&make=BMW&model=318&ID=129&type=Alarm

http://www.carsound.com/UBB/ultimatebb.php?ubb=get_topic;f=3;t=001725#000000

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BMW doorlocks

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