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- - Tach Problem (https://67-72chevytrucks.com/vboard/showthread.php?t=163584)

sinister72

07-10-2005 06:09 PM

Tach Problem

Scored a Tach dash,but as usual have a problem. Hooked it all up and tach goes to 500 rpm and stays. checked to make sure it wasnt binding,still only 500.Checked connections and still only 500! Any ideas or should i just start over?

rage'nrat638

07-10-2005 07:31 PM

hei or stock points inginition?????

sinister72

07-10-2005 10:46 PM

HEI ,,connected the coil wire from tach ,to tach spade on distrubitor

Longhorn Man

07-10-2005 11:25 PM

Check your ground from insterment panel to the dash. Most likely it is a bum tach though.

sinister72

07-11-2005 07:35 AM

ttt

BOSS	07-11-2005 11:26 PM

Where does the ground hook to?I am having the same trouble here also.Tach goes to about 700 and will move up and down but wont go up any farther.Ground or junk tach?

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