Thread: Notes on a 2012 E92 M3 with a BimmerTech rear camera kit install
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      09-17-2012, 05:45 AM   #3
Technic
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Quote:
Originally Posted by Mike Benvo View Post
That's very cool.

What is the relay for in the picture?
... it turns the camera on and off. No battery drain while the car is off.
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