need wiring help

[vinnydahitman]

I recently pulled a nav unit out of an old car before i traded it in. Im attempting to put this into the wrx. I have to locate and tap the following wires:

Speedometer signal input (think i found this one... behind gauges, all the way to the right... C2... right?)

Back-Up Lights (reversing signal) ?????????

+12 V permanent power (ill fuse it off and attach it to the stereo power)

+12 V switched power (ill connect this one to the switched power of the HU also)

Switch Input Low Beam (not dashboard illumination ?????????????

Ground (easy)
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so my problem is the reverse and lowbeam connections. I dont know where to look or start looking. Can someone please help me. Diagrams, locations, colors would all be great!!!!
Thanks

[vinnydahitman]

wow... nobody knows where these wires are???