Originally Posted by ol trunt
This may or may not apply. I've had luck with stuck meters being re set by using a powerful magnet to sweep the meter back into the zero position. A strong magnetic field will do the trick without even removing the gauge from the dash.
Well, changed out the alternator, and no luck. Going to try the magnet trick, if that don't work, guess I need a new tach. Don't want to travel without one.