[rfaust6024]

I have a 77 911 with a 86 3.2. Now that it's getting cold I'd like activate the fan that is on the left side of the engine for the heater shrouding. Presently all I can do now is pull up those 2 levels alongside the hand brake but it really doesn't heat up the cab very fast or much at all. I think activating the fan over the engine would be just the ticket to get a "hot" car. Was wondering what others have done as from what I understand this engine swap is a common thing now. Are there any wires or switches needed? Or how about a wiring diagram which shows how to activate?
Thanks in advance, and again this is my first Porsche so I'm in the learning state.
Bob Faust