I was refered to the board from the mwsr msg. board hope some one can help me out heres the deal puttin the touch screen in the lincoln, got the parking break wire grounded and the vidio is working fine...BUT i aint gettin any sound when the car is started, but I do when it is on acc. keep following me though.... there is a red (it is hot) wire that was grounded to the back of the fac. radio and if I ground and then release this wire while the car is on I get my sound back..... aint never mesed with somthin like this....DO I NEED TO GROUND THIS WIRE?? IF SO WHERE...TO THE BACK OF MY DVD PLAYER...TO THE FRAME??? IM LOST ANY INFO WOULD BE GREAT...ALSO ANY BODY KNOW WHERE I CAN GET A WIRING DIAGRAM ONLINE? btw this is in an 87 mark vii, and im not 100% but i believe it may have a factory amp, it does have the premium sound system..