New tachometer is not working after installation

1968 CHEVROLET TRUCK
50,000 MILES • 5.4L • V8 • RWD • MANUAL
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CHERYL PURDY
  • MEMBER
  • 1 POST
I am trying to put a tachometer into my truck. I hooked it up the way instructions say black wire to negative battery red wire to battery, voltage terminal green wire to negative side of coil do not need white wire for light. the tachometer does not work at all. I have a stock coil and stock distributor.
Sep 26, 2016 at 7:55 AM
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HMAC300
  • ✓Experienced Mechanic
  • 48,601 POSTS
recheck your connections it could be a bad tachometer. also, look on back of tachometer to see if you have to switch for 4-6-8 cylinders that is usually the case and re-read instructions.
Sep 26, 2016 at 8:48 AM
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