Overhead DVD/Rear AC controller problem

I installed a 10'2" overhead dvd player in place of my dome light/rear AC controller, but when I unplugged the rear AC controller, I lost the entire system, it would't work off of the front controller. When I plugged the rear control panel back in, everything worked. I just tucked the rear controller up into the headliner and use the front overhead controller to run the rear climate control. The kids never used that controller for the heat/AC anyway, but I'd rather remove it entirely instead of jamming it up in the overhead. Does anyone have a diagram to help me maybe jump a couple of the wires in the harness to the rear controller to complete the circuit? I have a feeling that the rear control panel is wired in series and not in a parallel circuit which just leaves an open circuit when it's removed.
Tough one I know but I gotta be me!
Thanks,
Scotty