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12-14-2007, 04:49 PM
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#1 |
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Registered User
 
Join Date: Nov 2007
Location: Vernon, Texas
Posts: 331
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Tach Help
Hi yall, i just got my truck, and it already has a tach in it, it worked but since has stopped, the external regulator? went out on the truck right before i bought it, dont know if that has anything to do with it, any help on what might be the problem or where to start looking, Thanks Kyle
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12-14-2007, 05:39 PM
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#2 |
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Back in the sticks
Join Date: Jan 2001
Location: Fordland, MO
Posts: 3,188
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Re: Tach Help
Need more info. Is this a stock in dash, or aftermarket tach? Are all the wires hooked up? Also need to know how it is wired. Is this an HEI, or coil truck? Where is it powered from? Fuse box? More info please.
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1971 Cheyenne C-10 w/700R4 and Tuned Port Injection 1969 K5 Blazer w/Tuned Port 2010 2SS/RS Flaming Orange Camaro 2011 K1500 Suburban 2014 K1500 Pickup 2008 Nissan Altima? The wifes' hoopty |
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12-15-2007, 02:49 PM
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#3 |
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Registered User
Join Date: Nov 2007
Location: Vernon, Texas
Posts: 331
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Re: Tach Help
Sorry its stock tach(or aftermarket from lmc but stock lookalike), i tried tracing the wires today, started at the distributor, followed through the firewall, to the fuse box, then it looks like its spliced and then i couldnt follow where it goes
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12-15-2007, 03:51 PM
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#4 |
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Senior Member
Join Date: Dec 2006
Location: Studio City, Calif.
Posts: 2,861
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Re: Tach Help
so it doesn't work at all? Then I'd remove the wire at the coil and totally clean up the connection and re-install,as a first step.
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'69 GMC C2500 Custom Camper, 8 1/2' bed, New GM 350, NP 435 Close Ratio 4spd. Trans., 3.73 Dana-60 open.Camper and Trailer wiring, PS, PB, AC, tach , three gas tanks, 2nd owner, Work-Truck supreme. Best $300 I ever spent. |
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12-15-2007, 07:27 PM
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#5 |
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Back in the sticks
Join Date: Jan 2001
Location: Fordland, MO
Posts: 3,188
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Re: Tach Help
Pink wire should go to a pink in the fuse box and the brown goes to the tach lead on the HEI. If you don't have an HEI, it goes to the + on the coil. If those are hooked up, you may have a bad tach.
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1971 Cheyenne C-10 w/700R4 and Tuned Port Injection 1969 K5 Blazer w/Tuned Port 2010 2SS/RS Flaming Orange Camaro 2011 K1500 Suburban 2014 K1500 Pickup 2008 Nissan Altima? The wifes' hoopty |
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12-16-2007, 01:41 AM
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#6 | ||||
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Union Electrician
Join Date: Feb 2005
Location: Louisville, Ky.
Posts: 3,356
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Re: Tach Help
Quote:
The brown signal wire goes on the Negative side of the coil, when not using HEI.
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 69 Custom-10 SWB FLEETSIDE  350/350 TH Dropped 3.5/5.5"Help support the board->HERE Board vendors -> Vendors list Zip:40272 Big Sandy Survivor... Quote:
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12-16-2007, 04:22 PM
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#7 |
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Registered User
Join Date: Nov 2007
Location: Vernon, Texas
Posts: 331
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Re: Tach Help
Thanks guys, ill try pullin the wire and re installing, and see if i get anything, on a side note it is a hei, cuz the brown wire goes to the tach lead, and the pink to the fuse box
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