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The motorhome already had a black and white back up camera hooked up to the TV set; rather than run new wires (they were too short by far for such a long vehicle anyway) the existing video wire from the camera was used. The new camera was much smaller than the old one and fit very nicely into the space where the old one was; it just needed a new mount and that was easy. The power wire for the old camera was wired to a switch on the dash board, and the new switch wire to turn the unit to backup was spliced to the same switch.