TxTom

I replaced the wire and front camera and now both my front and rear camera have this weird deal like a ghosting image of parking guidelines moving across the screen.

could my grounding be bad, or something go wrong with the kenwood (its 2 months old) ?

guidelines are controlled on/off by a wire loop on the camera wires. I have left both cameras intact using the guidelines on the cameras.
the kenwood has an option for its own guidelines on the rear camera only which I have turned off

hope you can see the video ok

madsonp

Does it do this both when the car is in accessory mode and when the engine is running ? If it's only when the car is running I would suspect it's getting interference from some other electrical component in the car. I suggest trying to reroute your camera wiring away from any other of the cars wiring and see if that helps. Try unplugging each of the cameras one at a time and see if it goes away when one or the other is unplugged.