I have hooked up about 5-6 different dvd flip ups in my past 4 cars. I had my N1 in my bmw before i moved it to now the land rover. (just got back from being serviced for blank screen and motorization) its all wired up, but no sound! No beeps from navigating by touch screen, no static, no cd sound, no FM. NOTHING!! any ideas??? i have tried to read past post but cant come up with anything! there is NO internal amp (no harmon kardon) i hooked back up the factory HU and there is sound....

HELPHELP!!

Is the amp turnon lead hooked up. To my knowledge, that vehicle even if it doesn't have the harman kardon system still has an outboard amp in the vehicle. Also check the speaker leads on the harness and make sure they're not shorting against each other or ground.