The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post - CA 1964-66 Cluster Tac and Vac

**chevy Dan** · 01-10-2023, 01:50 PM

I don't know what the aftermarket wiring harness look like for a factory tac. But the tac are only two wires one for the power and the other to the distributor. You can run your original harness or aftermarket with two wires.

01-10-2023, 01:50 PM	#4
chevy Dan Senior Member Join Date: Aug 2021 Location: Redding California Posts: 768	Re: 1964-66 Cluster Tac and Vac I don't know what the aftermarket wiring harness look like for a factory tac. But the tac are only two wires one for the power and the other to the distributor. You can run your original harness or aftermarket with two wires.