Kathleen,
What type of monitor is in the bedroom (is it separate from the TV)? Does it have any controls built in and do you have the Aladdin joystick mounted separately?
My (2005 Coach) just uses the bedroom TV for displaying Aladdin info, with a separate joystick mounted on the wall above the nightstand.
The Kenwood unit (in the dash) can be replaced with just about any car audio receiver that fits the dash opening and has a backup camera input (the Aladdin outputs video on a RCA video jack).