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Lugnut64052 · 11-16-2008, 08:22 PM

The control head is built into the heater/AC control unit in the dash. It's about the size of a quarter, and rotates when you move the appropriate control lever.

The vacuum source is the port on the rear of the intake manifold between the carburetor and distributor.

11-16-2008, 08:22 PM	#3
Lugnut64052 Middle-aged Curmudgeon Join Date: Jun 2008 Location: Independence, MO Posts: 753	Re: Need Help with Heater/AC for 70 C20 pleases!!! The control head is built into the heater/AC control unit in the dash. It's about the size of a quarter, and rotates when you move the appropriate control lever. The vacuum source is the port on the rear of the intake manifold between the carburetor and distributor.