tach trouble
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New User
Joined: Apr 2008
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tach trouble
iv got a 65 ford.not sure what the motors out of but the best iv found so far is its a 289 thats out of something in the 67s.iv tried to hook it up like normal bu t it wont work.iv even tried a differant tach.is there something with the points styl thats dif or is there just some thing im not seeing.id realy like to have a tach.pleas help
Cargo Master
Joined: Sep 2007
Posts: 2,095
Likes: 2
From: Wahpeton ND
negitive side of the coil.-Green wire
switched Positive.-red wire
ground.-black wire.
Sould work.
Find out what motor you have. More Info is generaly better than less. 289's never came in a pickup to my knowledge and 302's not till later in the 70's
switched Positive.-red wire
ground.-black wire.
Sould work.
Find out what motor you have. More Info is generaly better than less. 289's never came in a pickup to my knowledge and 302's not till later in the 70's
Elder User
Joined: Jul 2006
Posts: 930
Likes: 0
From: East Helena MT
Does the tach not do anything or just displays the incorrect reading?
Red wire to switched power
Green wire to negative on the coil
Black to a known good ground
White to a light switch to turn on the light in the tach.
It makes no differance the brand or size of the engine when installing a tach. They work on 4, 6, and 8 cylinder engines by hooking up as listed above. The only change to that is new engines with out distributors and then there are changes. But as long as it was a single coil fired engine points or electronic ignition no change in the wiring. There is a switch inside the tach to select the number of cylinders from 4 to 6 to 8.
Jeff
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