Toyota Repair: 85 Supra clicking from auto air conditioner controls and affecting the heat temp, auto air conditioner, system fault

Question
I have a 85 Supra that at times has a clicking sound coming from the left side of the auto air conditioner control system. Also when I turn the heat on the heat temperature will fluxuate with the clicking in the system. It sounds almost like relays opening and closing. Any idea what's going on?
thanks    Dave

Answer
There are all kinds of relays in that car behind the dash.
Easiest thing to do is hunt it down while its making noise, check the part number on it and the dealer can tell you what relay it is.
Then you can diagnose as to a system fault or a bad relay.

Mike