Re: Dead man's switch
You can do it but it will take a bit of work and fabrication.
The "kill switches" are made for CD igntions where one wire is grounded to shut off the motor. Your points igntion will have to have wires from each set of igntion points connected to both wires of a "kill switch", such as one from a later model Johnson or Evinrude. Now when the lanyard is pulled, the switch closes and shorts together both ignition points and the motor stops.