I searched and everyone says they "got power from the back of the nav unit in the trunk" but no one says what wires those are....any help?

 

Get a manual! There's a power wire on the small harness. (Or you could check for it with a multimeter.)

 

I would not even attempt to get power from the navi unit, any failure to the navi unit will be blamed on the power wire and the drive is in excess of 2k. I would just run an add-a-circuit from the fuse box with a new wire to doms unit, or tap the cigerate lighter.

 

i believe on the 06s u donte ven need a doms unit=X

 

you do if you want to run a video signal, ie: xbox. you don't need a dom's if all you want to do is use a backup cam.