Reversing Cameras and screen (Waterlooville PO8)

These two cameras were fitted on my motor home, one was cloudy round the edge, the other was fine. I was advised to replace them and did so but I still had problems with the system. I was then advised to replace the screen, did so, still had problems. I was then advised that the problem (clearly) lay with the wiring between the two!!! So there is a good chance that the cameras and screen actually work fine; if anyone wants to take a chance with these, you are more than welcome.