I used North Hollywood Speedometer to convert my tach to read a square wave from my ignition. Works well, can't remember the turnaround time but that could have changed.What a loss and how sad for Nisonger. I was going to use them to convert my original BN1 tach to electronic operation. Are there any pther āgo toā restorers/ conversion specialists?
Oops , West Valley .jet lag brain .Nisonger or West Valley?