I just bought the dual headrest from walmart and can not get the sound to work the passenger side. can anyone help me with this?or possibly tell me how to get the sound through the stereo.
The monitor only headrest does not have audio handling circuitry in it. the wire harness for that side is the one with the red and black wire, and the two video inputs, not the harness with the red and black wire and the three RCA jacks. It will function on the wrong harness, but it is not the correct one.
The DVD headrest has two harnesses. One of them is for power and output, the other is for input only from another source. The harness with the red and black wire has the three RCA outputs... the video lead goes to the other headrest, and the audio can be fed to an aux input on a stereo or amplifier. The input harness is designed to be Video 2 input from either a gaming system (a Game Cube is a nice option), or another DVD or video source (hand held video device such as iPod or Smart Phone like a HTC Touch Pro 2).
To get sound out of the stereo, either run the audio output from the headrest to the aux input on your stereo, or cycle the FM transmit options using the FMTX button on the DVD player unit to a station you can tune to on your car's FM radio.