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1984 911 Carrera heating system

Heating and Ventilation

Vehicle Information: Model: xxx; Year: 1984; Body Type: Coupe; Engine (type, size, modifications): xxx; Total Mileage: xxx;

I just purchased a 1984 911 Cabriolet and like it very much. I have a minor heating problem that I need some help on. I can get heat by lifting up on the two red levers next to the handbrake, but when I turn the red knob (a three-position rotary switch) between the seats nothing happens, i.e. the fans do not come on. The dashboard controls seem to be working correctly. So far, the only thing I have been able to check is that the switch on the passenger side red lever is working and is getting 12 volts. According to the wiring diagram there is supposed to be a fan relay. Where is it located? The owners manual doesnt refer to one. Also, the diagram doesnt show the switch on the heater lever. I believe there are supposed to be two fans. Where are they located? Any advice you can give me in running down this problem would be greatly appreciated. I was at the track this past weekend and it was 30 to 40 degrees and snowing. It sure would have been nice to sit in the car with the heater on, but in order to get heat right now the car has to be moving.

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