Are you sure the tach works?
What name or brand of tach do you have?
It sounded like you have it hooked up some what right the first time.
Red to hot wire.
Ground the tach out to frame or a good ground spot.
Then your signal wire should go to coil.
2008 Vulcan 1500 Classic fi
Last edited by C00lCountry; 11-10-2012 at 09:12 AM.