So went about wiring in a 6 pin toggle switch to control the varex.. got it all up and going but no love on the exhaust. So i Now think the motor must be forked on it.
Gonna pull the muffler off this weekend and check that current at the exhaust but im 98% sure the switch is working.
Was good fun learning how to use a multimeter and practice my soldering skills from year 7 lol.