Problems with backup camera

Thanks for replies. Think I have tracked the wiring and will work on the connector between camera and monitor again.
Bob

Bob
I have a vanguard that was probably installed when the coach was new 20 years ago. Several years ago I started loosing a picture and thought it was the camera so had a new on installed along with a new cable. Everything worked ok for a while then began loosing the picture again. They had installed the cable on the underside of the RV along the frame in the same location as the original . The cable was open to the elements and subject to abrasion from the undercarriage. I pulled the cable and tested it and could not get continuity so purchased a new cable. While I was waiting for UPS to deliver the new cable I decided to see if I could locate the break in the old one. I probably cut that thing in 5 pieces before I could find a section that would test. Then I thought I’d see if I could solder it back together. I did, so I connected to the monitor and the camera and it worked. I decided then that I would run the new cable, when I got it, inside the coach along the wall behind the cabinets. I used the old cable for a trial run, it worked fine and it’s been in there ever since. I still have the new cable which is stored away somewhere. Anyway you might look at the cable for the problem.
Stan

Our backup camera monitor has two possible camera inputs, but just one camera. Sometimes the button that switches between the two inputs gets bumped and it behaves just like yours. If you have such a switch, try switching it.

al