Replaced old non-working tach with new, tach zeroed out with power on. Started engine, tach indicated RPM, engine stalled, re-started, tach stopped responding and is "stuck" at 800 RMP. Had replaced igition switch but do not know if old tach died before or after replacement of switch.
Engine starts and runs fine with new switch. What could kill tach?
Engine starts and runs fine with new switch. What could kill tach?