Audio Systems: 2007 suburban, video wires, wireless headphones

Question
I have a 07 suburban with factory navigation and rear entertainment dvd.  The dvd system is made by panasonic.  The dvd unit is up front with the radio.  I want to replace the drop down screen in the back with a larger screen.  HOw do I make the connections with the oem wire harness. Thanks

Answer
when you pull the factory unit out you will see that there is power and video wires if the paper is not there you can open  the case to see inside the plug the rest of the wires are for the other video input and wireless headphones,they can be a problem to connect but you only need to get the video from the main harness