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      02-22-2008, 10:58 PM   #49
BimmerZealot
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Drives: 2019 BMW X3 xDrive30i
Join Date: May 2007
Location: San Diego, California

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Sorry I missed that. You want to use the rear view wiring harness. It will be towards the back of the dome light housing. It's prewired for a universal garage door opener even if you dont have one which is why it has a power wire in it. To get to it you can take a flat head and open up the base of the mirror assembly (clam shell I think is what people call it) inside you'll find the plug and the wiring harness. I remember not being able to unplug it so I just reached into the opening, located my wire (probably wrapped) and spliced it without unplugging the wiring harness. Let me know if this helps.
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