I have a 7in indash screen, 2 headrests, and a dvd player head unit. However, every so often, the tracking on the headrest gets messed up and the picture starts moving up the screen (both at the same time). But it doesn't happen to the screen in the front. What is the cause?

 

is one connected to the other's video output? That could explain the 2nd one. As for the first one, or both, try making sure your power and ground are good. Does it happen at lower volumes, or more when the stereo is turned up?

 

well.....i had to use a splitter from the head unit (one for indash tv the other for the headrests). The headrests are joined into one. It happens whether the stereo is low or high.

 

bump...............

 

Is your splitter also one with the signal amplifier. You may need to get one that also amplifies the signal. I had bought one for my system but I ended up not needing it. I only have 2 monitors though.