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Old 07-04-2017, 12:06 AM   #1
70K10Hunter
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Join Date: Jun 2012
Location: Hill Country
Posts: 435
Tach cluster swapout

Been thinking about upgrading to a cluster with a factory tach. My question is... Is the wiring harness that plugs into the back of the cluster wired for a tach? will I need to add a wire(s) and plug into my HEI, or replace the harness? The fuel gauge moves location to the left side of the cluster. do I need a different printed circuit. Is there anything I'm missing?
Truck in question is a 77 3/4 ton 4x4 no cruise, no tilt, pretty basic.
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