The camera positive is connected to the reverse light positive and is grounded to sheet metal behind the taillight. I had to run an RCA cable from the back to the front, the hardest part being getting the wiring through the rubber tubing at the top of the hatch ( I sprayed a little WD40 to help). The mirror is powered off the cig lighter wire. I was able to tuck the RCA cable behind interior panels and the only panel I had to actually remove was the drivers A piller. I made it so that the connections for the camera are stuffed in the spoiler so if I need to change out the camera it will be fairly easy. I had to drill a hole on the backside of the spoiler for the camera cable and then covered it with a piece of 3m carbon fiber vinyl I had laying around. (you can't see the vinyl since it's on the backside of the spoiler). I sealed the camera with silicone sealent and it rained this morning and so far no issues with fog or anything.
This camera does not have night vision but with the reverse lights I can see pretty clearly at night. With my receiver ball in I can actually see the ball itself (will come in handy for trailer hookup)
I hope this helps out.