Crank Trigger to Magneto Cross-Over Switch MSD7990

Use with Pro Mag

MSD7990

D7990

With the Sprint Car Crank Trigger system, the timing is first set at the magneto to ensure correct rotor phasing. Then, the pick-ups are switched and the timing is checked and adjusted again at the crank trigger pickup. This switch allows you to start the car and toggle between pick-ups, so the car only needs to be started once to get the timing dialled in. Also, by setting the generator slightly retarded over the crank trigger, the driver could switch pick-ups and have two timing settings.