I am trying to determine the cause of low voltage at the coil. (1939 Deluxe, 6 volt, 85 hp) My coil voltage is 3.1 and it should be 4.2 What should the voltage be at the following points:
Ignition switch- battery side?
Ignition switch- coil to Resistor?
Resistor -wire from Ign switch?
Resistor -...