Thumbnail Filmstrip of Solenoid and switch to Kill - Pro Mag 44 Electri Images
This heavy-duty solenoid and kill switch is designed to handle the high current of the Pro-Mag 44 as well as the vibrations and harsh conditions of Top Fuel racing. You cannot simply use a kill switch, it has to work through the solenoid
The solenoid is normally closed, but when you apply 12 volts, it opens the ground path allowing the engine to run. Once the 12 volts is removed the solenoid closes to ground shutting off the magneto's power.
One per magneto is required. PN 8134 can also be used in conjunction with a master cut off switch to "kill" the magneto - MSD or Mallory.
https://documents.holley.com/8134.pdf how to kill a 44 amp 6