2004 bmw 6 series lock/unlock wire

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equate

Copper - Posts: 118

Joined: March 07, 2005

Posted: July 20, 2012 at 11:30 AM / IP Logged

This car uses same wire for lock and unlock.

How to make connection to alarm?

howie ll

Pot Metal - Posts: 16,466

Joined: January 09, 2007

Location: United Kingdom

Posted: July 21, 2012 at 4:14 AM / IP Logged

This is really too obvious but set your units lock and unlock to NEG (-) pulse and join them together.

Alternatively, probe around in the driver's door around the window switch (if it's in the door) or lock wiring, there should be a pair of NEG going wires for lock and unlock, extending the lock time for comfort close.

equate

Copper - Posts: 118

Joined: March 07, 2005

Posted: July 22, 2012 at 12:27 AM / IP Logged

howie ll wrote:

This is really too obvious but set your units lock and unlock to NEG (-) pulse and join them together.

Then how does the car know it is lock or unlock?

If I press lock, it might unlock, press unlock it might lock.

howie ll

Pot Metal - Posts: 16,466

Joined: January 09, 2007

Location: United Kingdom

Posted: July 22, 2012 at 4:26 AM / IP Logged

Not my problem, it's known as 1 wire sequential locking.

As I said that's how they've listed most BMWs since 99 but I found those extra wires in the DKP on 3 Series and at the door switch on 5 Series (which is essentially a 6 series).

Renaults use a similar system, just don't use the factory remote OR find those two wires.

equate

Copper - Posts: 118

Joined: March 07, 2005

Posted: July 22, 2012 at 11:44 PM / IP Logged

2004 bmw 6 series lock/unlock wire -- posted image.

Thanks howie

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2004 bmw 6 series lock/unlock wire

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