I'm very glad to hear that someone is helping HD 
I mentioned this before - The 350X runs with the kill/lt switch removed at the main plug. "OFF" grounds out the circuit, so unless it won't shut off - cleaning the handlebars and the contact will not make a motor run....... If it's unplugged completely, it can be ruled out.
HD mentioned the VR too - the voltage regulator has no effect on the spark. It regulates voltage to the head and tail light, thats all.......
All our government does is distract us while they steal from us, misspend our tax $ and ruin our country