Originally Posted by John_Kunkel
What makes you think the switch in the shifter can't handle the starter solenoid load?


Most of those switches are just small micro switches of some kind, I can't imagine they are intended to carry any substantial load. And most race cars are or should be running a remote Ford style solenoid to operate the starter, Or if it has factory stuff in it, run the brown wire in and interrupt it with the neutral switch.

If the results don't match the theory, change the theory.