Home › Forum › Ask A Member › How to wire a vintage Airguide Tachometer for Magneto Motor? › Reply To: How to wire a vintage Airguide Tachometer for Magneto Motor?
Personally, i would connect to either one. In fhe first place, the cut-out switch does nothing 99% of time. the other 1% is when the motor is in an overspeed condition due to over-revving in a no-load condition, such as revving it up too high in neutral or busting a shear pin. IF and when hat happens, the tach might stop working temporarily until the motor speed is under control and the cut-out switch returns to its normal function, which is doing nothing. My suggestion was simply to eliminate confusion when trouble shooting.
IF you see such strange tach behavior wh3n the cut-out switch is doing its thing, simply switch the tach lead to the other M wire. Problem fixed.
Now figure out why the motor is over-revving.