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Old Mon, Sep-25-2017, 11:13:52 PM   #1
cek
S54 E28
 
Join Date: Dec 2015
Posts: 16
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Default Using Mirror / Dome Light Power for Radar Detector

I'd like to tap into either the mirror or dome light power for my radar detector install (like this guy did in the E36: http://www.m3forum.net/m3forum/showthread.php?t=445897).

This is for a 2017 M4 coupe.

In our case it's not clear what wires are what, and the connectors are much smaller than they used to be and the RJ11 taps won't (easily) work.

Here's some pics to show:


This is what it looks like under the plastic cover that covers the mirror mount:


Anyone know which of those wires is ignition switched +12v/ground?

Here's the tap I bought:




Separately, if that doesn't work, how do you get the overhead console off to access the wiring that powers the dome lights?

Thanks.
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