Car Alarms: 2007 Chevy 2500 rear cable wiring, back up camera, cable wiring

Question
I want to install a back up camera on my Chevy 2500. The manual says light green colour wire for back up lights and white colour wire for ground. Where do I find this cable harness underneath my truck's rear end?

Answer
At the rear brake light assembly/harness
is where you look.

To test, key in ignition, turn to on just
before cranking, then put on the parking
brake, and place the transmission in reverse.

The wire that goes to 12 volts at the light is the
one you need.

Good luck.

ALARMTEK