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Old 10-08-2011, 08:57 AM   #1
FL71C10
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How do I test a tach?

I just bought a gauge cluster with a tach. I'd like to test it before I put any time or money into making it pretty. How do I test it out of the truck with my HEI distributor?

Thanks!
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Old 10-08-2011, 10:25 AM   #2
FL71C10
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Re: How do I test a tach?

anyone?
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Old 10-08-2011, 11:33 AM   #3
71meangreenc10
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Re: How do I test a tach?

Run a hot, a ground and a wire to the tach terminal on the HEI. Id ground the metal base of the cluster....The back of the cluster should show you the wire connections to the tach, the one I have does.

Smitty
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71 C10 283/3SPD Full Resto
71 GMC 1500 Sierra Grande http://67-72chevytrucks.com/vboard/s...d.php?t=518599
70 C10 Suburban Former military GSA truck.
72 Chevy Blazer 4X4, Sloppy Jo, Mountain Climber. Wife says no more trucks. http://67-72chevytrucks.com/vboard/s...d.php?t=707378
72 GMC 1 Ton Motor Home, wife said no more trucks until she saw this one. Gen 3 6.0/4L80E 4.10 http://67-72chevytrucks.com/vboard/s...d.php?t=761110
68 GMC Suburban was 3/4 ton, now 1/2.Wife shook her head
71 C30 Wrecker
71 C20 Scott-Bilt As weird as it gets..BB Cheyenne AC Truck
68 GMC Long Stepside. They keep following me home
69 C30 Former Motor Home, Flat Bed time
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Old 10-08-2011, 11:45 AM   #4
FL71C10
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Re: How do I test a tach?

Thanks.
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4l60E. Just got back from painter, in assembly now.
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Old 10-08-2011, 11:45 AM   #5
71meangreenc10
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Re: How do I test a tach?

No Problem....


Smitty
__________________
71 C10 283/3SPD Full Resto
71 GMC 1500 Sierra Grande http://67-72chevytrucks.com/vboard/s...d.php?t=518599
70 C10 Suburban Former military GSA truck.
72 Chevy Blazer 4X4, Sloppy Jo, Mountain Climber. Wife says no more trucks. http://67-72chevytrucks.com/vboard/s...d.php?t=707378
72 GMC 1 Ton Motor Home, wife said no more trucks until she saw this one. Gen 3 6.0/4L80E 4.10 http://67-72chevytrucks.com/vboard/s...d.php?t=761110
68 GMC Suburban was 3/4 ton, now 1/2.Wife shook her head
71 C30 Wrecker
71 C20 Scott-Bilt As weird as it gets..BB Cheyenne AC Truck
68 GMC Long Stepside. They keep following me home
69 C30 Former Motor Home, Flat Bed time
70 G20 Red-E-Kamp Conversion "I'm your Boogy Van"
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