recently lost use of tach and hr meter...wiring harness goes through 2 12v 40a relays...now have lost the ability to start the engine(another story). what i am looking for is a wiring diagram for the tach and hr meter panel
I had a similar problem after I pulled the starter for a rebuild. Found the W4 connector had been connected to the wrong terminal at the starter. It will reach both the +12 volt solenoid terminal and the ground terminal. I don't remember which way was correct, but reversing them restored my tach function.
