One thing others may want to do for reverse camera is to power it within the tailgate. It was a lot easier only running the RCA wire through the gate boot than trying to get that, power, and ground through.

You can grab power and ground at the wiring connector for the rear wiper motor. The circuit is switched power that is live whenever the car is on. The harness has red/green and brown wires. The wiper circuit has plenty of amps to support the camera. I haven't noticed any interference when the wipers are on