I'm trying to hardwire my radar and dash cam to the map light harness, but I have no idea which is + / - because there are so many freaking color combinations in there! There's no simple black/red/white in there!

This is how I had it setup in my previous vehicle to the map lights.


Radar on top and dash cam velcro'd below.

 

a volt-meter or test light could find them in about a minute. I don't have the wiring schematic but even if I did proper technique would mean you would test the wires prior to tapping them.

 

http://www.youtube.com/watch?v=bF3OyQ3HwfU
so.. ****ing... confusing...