68 still has the switch in the dash. 69 is the first column mounted switch. That being said there are no longer and new switches for the 68. That was the problem with the one I had. But you only make the take the key out in the auxiliary position mistake once.
But the clicking noise in the rear may be either the heater or Ac motor. Check to see if all the switches by the attendant seat are off. Superior may have a master switch on the dash also.
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