I could have just put it on the license plate and run it off the fuel pump power, but higher is better. I have it temporary on the ladder. Final location will be even higher and centered.
Power for the camera was pulled from the 12V that supplied my old 3-way fridge and it's grounded to a screw on the bumper. I will use the same power feed when I pass the wires to inside the coach. It will run around the inside of the cabinets and there is a good ground there as well.
The display is powered by the cigarette lighter circuit off the inner fuse box. There was already a spade lug that comes off of the fuse (on the fused side). Ground is attached to a trim screw under the dash.
Jose