How to plug factory tach. - The 1947 - Present Chevrolet & GMC Truck Message Board Network

syncrov69 · 10-18-2008, 05:39 PM

I have a factory style Tachometre in my cluster and I know how I must make the connections to make it functional, I think one of the two poles at the rear of tachometre must be plugged into the coil Ignition. Thank you

Longhorn Man · 10-18-2008, 06:25 PM

one says coil, you hook a wire to it, and then to the neg post of the coil if you have points, or to the TACH terminal on HEI.
Then the other post on the tach gets hooked to a switched power, like IGN UNFUSED on the fuse box.

10-18-2008, 05:39 PM	#1
syncrov69 Registered User Join Date: Aug 2007 Location: Laval, Québec, Canada Posts: 175	How to plug factory tach. I have a factory style Tachometre in my cluster and I know how I must make the connections to make it functional, I think one of the two poles at the rear of tachometre must be plugged into the coil Ignition. Thank you __________________ '71 Custom/10 Deluxe LWB '71 Custom/30 Deluxe Dually

10-18-2008, 06:25 PM	#2
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,693	Re: How to plug factory tach. one says coil, you hook a wire to it, and then to the neg post of the coil if you have points, or to the TACH terminal on HEI. Then the other post on the tach gets hooked to a switched power, like IGN UNFUSED on the fuse box.



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