All right, here's what Im trying to do: Run an IVA-D310 or D900 in the dash, 15" overhead monitor w/built in dvd and 2 7" Vizualogic A-1000 headrest monitors w/built in dvd. What I want to do is have all the monitors connected to the IVA-D310 or D900 but also be able to play whatever media I want in any monitor(ie: Playstation 2 in the head unit, dvd in the 15" dropdown, x-box in the headrest monitor, etc.) I know it wont be an issue with the dvd because each monitor has its own dvd. Now please someone tell me how hard this would be to do and any help with a wire schematic or what Alpine products to use would be very helpful. I am in the military and overseas so I dont have any access to a car stereo shop.Thanks alot for any help.