factory tach

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Nov 21, 2003 | 01:28 PM

muscletruck7379

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From: Harrisburg, NE

factory tach

how is the factory tach hooked up? mine is somehow unhooked(most likely at the engine) and I would like to get it going again, but the only wire that I dont have going anywhere is a red one(it ran w/this wire unhooked)any ideas?

Nov 23, 2003 | 12:08 PM

steve83

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From: Memphis, TN

What year? What engine? What instrument cluster? What trim level (Custom, XL, XLT, EB)?

Nov 23, 2003 | 06:40 PM

muscletruck7379

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From: Harrisburg, NE

84, 302, xlt

Nov 23, 2003 | 09:44 PM

steve83

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From: Memphis, TN

It gets its signal straight from the coil on the DG/Y wire, power thru fuse 18 on the R/Y wire, and grounds thru the Bk/DG wire in the small (4-pin) connector. Check the fuse.

Nov 23, 2003 | 10:33 PM

muscletruck7379

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From: Harrisburg, NE

ok, will do, thanks

Nov 30, 2003 | 01:20 PM

stinkystank

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I've got a similar problem with my '81 Bronco stock tach, only it comes and goes whenever it pleases. There's a short somewhere but where do I start looking?

Nov 30, 2003 | 06:10 PM

grogant

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Joined: Jun 2002

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From: Cincinnati USA

yeap hooks up off the coil. mine was acting flakey all over the
place. Took a wire brush attachment on my dremel tool and
cleaned the terminals on the connector and the coil then sprayed
some electrical sealant on it and it has preformed flawlessy ever
since.

Tim