Backup Camera and Monitor replacement ?'s

This reply is from an older post on a different thread, but it applies here as well. I replaced the old "Videoman" b/w CRT monitor and camera with the Costco unit #507735. The old monitor was installed in the dash and the unsupported weight of the back end was causing the plastic panel to crack. I abandoned the old cable as it was over 15 years old, plus the plugs from the two systems did not match. I ran the new cable down from the dash, underneath the coach, and then back up to the cam between the end cap and the back bedroom wall. That was the most difficult part of the installation. The new unit uses a multiplexer and the power, monitor, and cam wires plug into it. I needed to resize the 6" x 6" hole in the dash as the new monitor was as wide but not as tall as the old one. So far, so good. I get a clear color picture and a better field of vision.