I have a Kenwood back up camera which i installed one year ago. It has worked flawlessly with my Kenwood DVD Radio. It is set up so that when i shift to reverse the screen on my radio changes to the camera view. Two weeks ago it crapped out on me. When in reverse the screen still changes but i dont have any picture/video. There are only two wires besides the power and ground. A purple wire which goes to the reverse light wire and a video wire which plugs into the video port of the radio and goes to the camera. I traced all wires twice and everything looks good. Is anyone experienced in this sort of thing? Thanks in advance.