I have searched for several days and can not find the answer I am looking for. I have a 2010 SR5 and want to put on the back up camera. I took the back apart and the console and I have the wiring in both places, but when I checked the four pin connector in the back I could not get any voltage readings to power on the camera. Do I need to hook up the harness in the front to get power in the back?

Thanks for any help.

The camera is powered from the Nav unit or an add on backup mirror connected to those wires.

Thanks, that's what I thought, but was not for sure.