anyone familiar with the ceiling mount factory dvd player? i want to know how its connected to the head phone jack on the center console. i replaced my factory head unit with an eclipse navigation head unit. i think the factory head unit completed the circuit for the head phones. right now the dvd player plays movies but the head phone jack doesn't work. i need to figure out where the signal is coming from on that dvd player. anyone know how to do this? this is how it's set up right now. the eclipse plays music/dvd's through the car speakers. the factory dvd player will be a seperate unit on it's own and only be heard through the head phones. this way i can still listen to music while the people in the back can watch a movie.