Does anyone know if the controls for the heating and AC are seperately wired or if it's one big set with one plug?
Ummmmmmm, there are three plugs. The A/C button has one all to its self and there are two more. The other two.... they do the rest of the stuff besides the temperature control, obviously. There are two wires (like on your old Huffy for the brakes) that control that. I wouldn't think it would be too hard to modify to a different Honda or Acura system if you can read wiring diagrams. You would just have to figure out which wire is which and how to seccure the two temp wires.
