I changed out the Sony BU camera and monitor for the RVS, last year. It would have been nice to be able to use the existing cable, and I explored that idea, but decided to just run the new cable, and be done with it. The new cable was more than long enough for my 36' coach. I got on a creeper, and with a bundle of nylon zip-ties, routed the new cable through the frame undercarriage, following existing factory wiring. It took and hour or so, but it wasn't bad. But I have spent a fair amount of time over the years, on the creeper, inspecting. cleaning & painting rust, greasing fittings, and doing other maintenance under my motorhome, so I am already use to it. This was just another thing.
It was a good fit height and width, but the original mounting brackets for the Sony, wouldn't work. Had to make a new sub-frame to mount the flat-screen monitor. I had a piece of 18 ga sheet metal which I cut and bent to fit in place, and tack-welded nuts in a way that I could use the original monitor mounting screws.
It came out looking like a factory install, and works great. I also installed a RH camera which the monitor displays whenever I use the right turn signal. It's a good upgrade project.
USAF 1965-1971; USCG Master
2002 Horizon 36LD - 2000 GMC Sierra 1500 4x4
Indian River, De