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Old 06-05-2023, 09:16 AM   #2
blue72k10
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Join Date: Sep 2017
Location: Winnemucca Nv
Posts: 79
Re: Stock style tachometers

Just installed a orig factory cluster in my 72. All I did was hooka red wire from fuse box to hot side of tach and ran a brown wire to the tack side of HEI. Everything worked as it should. Don't know how accurate it is but those tachs weren't designed for accuracy they were designed for use with PTO's to not over rev.
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