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      06-27-2015, 02:21 PM   #1
kloh's Avatar

Drives: 2009 E92 M3
Join Date: Mar 2009
Location: Southern California

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Need help confirming 12v and ground wires in rearview mirror ('09 E92)

I am trying to tap into the power in my rearview mirror to hard wire a radar detector. It's a 2009 E92 M3 and I think I know what the problem is but am looking for help from the community to confirm.

I'm pretty sure Green/White in slot 8 is 12v power and Brown in slot 10 is ground, but the wiring kit I have isn't working in this location behind the mirror, similar to the issues others reported in this thread:

I think it may be because the taps are too short.

I've got them shoved all the way in, but they just aren't working. Perhaps I am tapping into the wrong wires, but I was actually able to get it to work using what I think are the same Green/White and Brown wires when I went under the light console per this thread:

Only problem is, the wiring kit I bought is too short to use from this location.

My only option seems to be to get a longer kit so I can just use the power in the light console. Unless I'm just using the wrong wires behind the mirror?

Any advice would be appreciated.
Attached Images
ED Vehicle: 2009 E92 M3 6MT | Space Gray, Fox Red Ext, Carbon Leather | Mod Progress: Flickr Photos
ED Tour: Aug 3 - Aug 10 2009. (Trip Blog | Route map).
ED Progress: Delivery Aug 4th; Drop off at Frankfurt Aug 10th; Redelivery Oct 9th.

Last edited by kloh; 06-27-2015 at 02:59 PM.
Appreciate 0
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