is there a way to use the nav screen as an actually screen when putting a aftermarket double din. so when you watch a movie it would play on both screens at the same time. ive seen it before on a acura tl but forgot where i saw it at.can someone help me out what would i need to do this

 

nav tool and a separate dvd player to play on OEM screen

 

if the double din has video-out then you can go out from the double din into the nav-tool and it will show on both screens

 

If you live in Virginia, as your profile indicates, make sure you never use that dashboard movie screen when the car is in motion. No moving images on a television receiver may be visible to the driver. Virginia law provides an exemption allowing vehicle information display, a visual display used to enhance or supplement a driver’s view of vehicle occupants (basically like a camera-based baby monitor), television-type receiving equipment used exclusively for safety or traffic engineering information, or with the use of an interlock device that, when the motor vehicle is driven, disables the equipment for all uses except as a visual display.