[david-b]

Originally Posted by Cavalier9696

Good idea. How will I go about running down the tach wire? Or the easiest way. Maybe my haynes book?

Haynes doesn't have it.
Pull the plastic cover off the ECU and look at the harness and wires. The harness has numbers on it along the top/bottom. Should be 1, 21, 41 and the other side say 20, 40, 60.


Count from wire 1 and look for wire 8. Should be a solid white wire. That's the signal to the tach. You can splice into that one. Solder the wire on and tape up. Reinstall ECU wire cover.