[painterljp]

I have another complete tach dash for another truck I am eventually building. Gonna like you said try that dash. But am only gonna ground dash with a wire somewhere close. Then just unhook tach wires and plug them into new dash as long as it has a good ground I think it should work. That should tell me if it's something in truck or distributor or wiring or tach itself. If it works good have to get tach fixed. If it does same thing its in truck. Should be easy enough. Thanks for idea. We will see if it works.