hooking up video

ok i am preaty sure that i have figured out what i want to do. someone please tell me if you see anything wrong with this or if im just compleatly wrong about something cuz i am new to the whole car video thing. here goes

what i want to do is hook up a ps2 in my car and use that to play games off of and play dvd's.

so if i have this correct i can take the audio hook ups from the ps2 and put those in my kenwood cd players aux inputs. (its a mp7028 cd player)

then with the video signal run that into a video amplifier and then take those video signals and run those strait to the headrest monitors.

and by doing all that i should get the same picture on each screen along with the sound from the ps2 comming out of my speakers in my car? right?

here is were i need help. i dont know if this will actually work and i dont really wanna buy all the stuff to do this and then have it not be able to work so if there is anything wrong with this PLEASE let me kno. thank you