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      11-28-2012, 01:50 PM   #2
Second Lieutenant

Drives: 09' Alpine White M3
Join Date: Aug 2012
Location: SoCal

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2009 BMW M3  [5.00]
Originally Posted by GOVCO View Post
Hello Forum,

Preface - I searched the DIY Threads and couldn't find what I am looking for.

Question: Anyone know offhand if I can tap into my auto dimming rear view mirror, which I believe has wires under the mirror cover at the windshield, to use as a power source for my radar? I believe I can, just want to make sure as I haven't done this before. If so, anyone know how to pop off the mirror wire cover on the windsheild?

I don't want to use the longer hardwire kit to tap the fuse box.

- Escort 9500ix
- Mirror Mount:
- MirrorTap Power Cord:

Appreciate the help!


1. For the dbags that say, .... I did.....
2. For those that say, .... I did .....

The cover splits in half very easily, just grab it and pull. there are definitely switched power and ground in the mirror, but good luck taping into them. I tried the other day to do exactly as you want to do and there is no slack in any of the wiring coming from the headliner. If you remove the mirror you might get enough room in the wires to tap them, but good luck. I have 15 yrs experience in the 12volt industry and i gave up after 10mins. Wired my V1 to the fuse box instead!
09' AW M3, 6MT, Black Novillo Extended, Carbon leather trim, Premium, Moonroof, OEM Carbon spoiler, BMW LED Int. Bulbs, Avant Garde 19x11/19x9.5 M310 wheels, OOLux V3 AEOO, Vorsteiner Type II diffuser, Megan Racing Stainless exhaust, Benvo Stage 1 tune, Dinan High Flow Carbon Fiber Intake, Dinan Front anti-sway bar, H&R Sport springs, 30% tint