so my a/c and heater switch burned out from a short, and i was wondering if there was a place to get a whole unit or what i should do, i took the switch out of the car and saw that the orange piece was burnt. looking from the top of the unit it is right behind the controls for vent, bi-lev etc. what is that called and is it possible to just replace that or do i need to replace the entire thing. thanks for your help