Request: Wiring diagram for auto-dimming mirror

blasman · 03-18-2006, 12:29 AM

Poldim, do you by chance have the wiring diagram for the auto-dimming mirror with compass and garage remote?

Thanks in advance,
Blasman

blasman · 03-22-2006, 01:20 PM

Actually, the tech at the dealer and myself figured it out. There are normally 3 wires connected to the dimming mirrot/compass/garage remote. Pin 3: +12V green/white wire, Pin 10: Ground, Pin 1: +12V when in reverse blue/yellow wire. I had the dealer install the mirror using the retrofit wire harness. The compass worked, the garage remote worked, but the mirror never dimmed. After tearing it apart again and using a voltmeter, I found that Pin 1, the signal for reverse had +5 volts running thru it when the car isn't in reverse. It must have been enough to signal the mirror to not dim. Well, I just clipped that wire, and the mirror dims fine now. The only thing that doesn't work is that it will stay dimmed even in reverse. I don't find it a problem, but other people might.

In retrospect, this is a pretty easy DIY as the mirror just rotates to clip on or off the mount on the windshield. The +12V can come from the same switched wire mentioned in the valentine 1 hardwire instructions as well as the ground.

ages944 · 03-22-2006, 07:30 PM

blasman, which dealer? I was thinking of doing something similar myself.

blasman · 03-22-2006, 07:33 PM

I had it done at Patrick BMW in Schaumburg. It took them a while to figure out how to install the wiring harness, but I was their Guinea Pig, so they gave me a break.

ages944 · 03-22-2006, 08:38 PM

cool, thx. I'll keep 'em in mind if I decide to pull the trigger.

03-18-2006, 12:29 AM	#1
blasman New Member 3 Rep 13 Posts Drives: 06 325 Join Date: Nov 2005 Location: Chicago iTrader: (0)	Request: Wiring diagram for auto-dimming mirror Poldim, do you by chance have the wiring diagram for the auto-dimming mirror with compass and garage remote? Thanks in advance, Blasman
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03-22-2006, 01:20 PM	#2
blasman New Member 3 Rep 13 Posts Drives: 06 325 Join Date: Nov 2005 Location: Chicago iTrader: (0)	It works!!! Actually, the tech at the dealer and myself figured it out. There are normally 3 wires connected to the dimming mirrot/compass/garage remote. Pin 3: +12V green/white wire, Pin 10: Ground, Pin 1: +12V when in reverse blue/yellow wire. I had the dealer install the mirror using the retrofit wire harness. The compass worked, the garage remote worked, but the mirror never dimmed. After tearing it apart again and using a voltmeter, I found that Pin 1, the signal for reverse had +5 volts running thru it when the car isn't in reverse. It must have been enough to signal the mirror to not dim. Well, I just clipped that wire, and the mirror dims fine now. The only thing that doesn't work is that it will stay dimmed even in reverse. I don't find it a problem, but other people might. In retrospect, this is a pretty easy DIY as the mirror just rotates to clip on or off the mount on the windshield. The +12V can come from the same switched wire mentioned in the valentine 1 hardwire instructions as well as the ground.
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03-22-2006, 07:30 PM	#3
ages944 Captain 99 Rep 990 Posts Drives: E90 325i Join Date: Dec 2005 Location: Chicago 'burbs iTrader: (0)	blasman, which dealer? I was thinking of doing something similar myself.
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03-22-2006, 07:33 PM	#4
blasman New Member 3 Rep 13 Posts Drives: 06 325 Join Date: Nov 2005 Location: Chicago iTrader: (0)	I had it done at Patrick BMW in Schaumburg. It took them a while to figure out how to install the wiring harness, but I was their Guinea Pig, so they gave me a break.
	Appreciate 0 Quote

03-22-2006, 08:38 PM	#5
ages944 Captain 99 Rep 990 Posts Drives: E90 325i Join Date: Dec 2005 Location: Chicago 'burbs iTrader: (0)	cool, thx. I'll keep 'em in mind if I decide to pull the trigger.
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