Custom Remote Controller for Car Audio setup

Hey all, I want to set up a custom car audio setup in my car and want a remote that I can use to make things move such as sliding draws and covers. I have not as yet made a custom remote but I have got a little bit of experience with electronics. Could somebody please do up a bit of a schematic of the transmitting and receiving circuits? Any other tips would be greatly appreciated. Thank you.

How much will you pay somebody to design a custom remote control setup for you?

Simply go to a hobby store and buy a 4-channels radio control transmitter and receiver for a model airplane, boat or car.
Some have 6 channels or 8 channels.