can anyone help. i have a 2004 honda accord and just installed a rearview camera, and a dvd player to a 7 inch moniter. the moniter has 2 a/v inputs (rearview camera in one and the dvd play in the other). the problem i have is that when ever i put the car in reverse while the dvd is playing i have to manually switch from one screen to the other to see the rearview camera. does anyone out there know what do i need to install so that when my car is put in reverse the screen automatically changes from dvd to rearview camera and back to dvd once the car is put back to drive without having to manually switch screens?????