[gigamanx]

Originally Posted by Matt_50

Gigamanx, something like this? How do I know correct amperage?

https://www.summitracing.com/parts/prf-80153

Exactly like that.

Amperage is maybe 25-30a. Ignition only sends a small amount back to the starter (or in my case the neutral safety switch). I don't know the details of how the starter knows to engage, but its definitely not the 500amps going through that key switch If I were to guess, I'd say its a solenoid in the starter that is engaging both the start gear and closing the circuit for power from the big positive battery cable you've attached to the starter peg.