When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
I'm having a problem with the factory tach. If the switch is turned to the on position, the tach needle moves about past the zero position, below it. when the engine is started it does not move.
The car has a MSD ignition, the tach has been working off the MSD tach wire for about 15 years. The MSD tach still works, but not the factory. Does any one have the wiring diagram for the factory tach.
I'm having a problem with the factory tach. If the switch is turned to the on position, the tach needle moves about past the zero position, below it. when the engine is started it does not move.
The car has a MSD ignition, the tach has been working off the MSD tach wire for about 15 years. The MSD tach still works, but not the factory. Does any one have the wiring diagram for the factory tach.
Thanks
Sounds to me like your tach board tanked... If the tach worked fine before then that would be where I'd go next.