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07-07-2008, 07:24 PM
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#1 |
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Registered User
Join Date: Jan 2008
Location: walker wv
Posts: 23
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factory tac to hei help please
does anyone know how to hook up the tac to a hei the hei has one wire and the tac has to hook ups which one goes were and does anyone have pics of the back of the tac thanks to any help
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07-07-2008, 08:06 PM
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#2 |
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Senior Member
Join Date: Jul 2001
Location: Muskegon,MI,USA
Posts: 6,026
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Re: factory tac to hei help please
Welcome to the 67-72 Chevy Trucks Board from West Michigan!
I don't have a picture but if you have the correct harness there should be a red wire and brown wire to be used for hooking up the tach. The red wire goes to the "Unfused ignition" terminal on the fuse panel. The brown wire goes to the terminal on the HEI marked "tach". The tach gets its ground from the case so once you have the two wires hooked up, you should be good to go. Jim
__________________
1971 Shortbox step side 4x4, 350 sbc, 3:07 rear end 1965 Impala SS 400 sbc, Muncie rock crusher 1966 Impala SS 396 bbc, TH 400 1969 El Camino, 350 sbc, TH 350 1971 Snowplow built on a Blazer frame 1972 GMC Short bed, stepside, TH 400, 427 BBC |
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07-08-2008, 07:36 PM
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#3 |
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Registered User
Join Date: Jan 2008
Location: walker wv
Posts: 23
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Re: factory tac to hei help please
thanks for the info do you now which post on the tac gets which wire i do not have the right wiring harness thanks again
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07-08-2008, 11:35 PM
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#4 |
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huh ???
Join Date: Nov 2002
Location: Fredericksburg,Va.
Posts: 3,369
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Re: factory tac to hei help please
This should help. It's the factory tach from the truck I just sent to the scrap yard...
Chuck
__________________
90 Blazer Silverado 350w/ 700R4 and 32" Kelly's "I am a bomb technician. If you see me running try to keep up!" |
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