I bought a Pyle Radio/DC/DVD/Bluetooth stereo unit for the Protege. It has a LCD screen on the face for watching movies or a backup camera. It is a Pyle View PLDBT30U, and the instructions are kinda in Chinglish with no real indication where to wire the grey brake wire to. I have never hooked up a in car DVD. Does the grey brake wire go to the 12v hot wire or the GND? I assume it's going to be wired to 12V correct? Do I wire it to the wires for like the parking brake switch? Thanks ! ! ! ! !(dunno)