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

[kloh]

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: http://www.m3post.com/forums/showthread.php?t=775382



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: http://www.e90post.com/forums/showthread.php?t=97545

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.

[PilotAce]

Did you ever figure out which one was ground? I suspect it's the brown/black wire to the immediate right of the green/white wire (12V power)....

[Tut4u2]

Brown/Black (Pin10) is ground. Red/Violet (Pin 8) is power.