Recon 250 wont start

I was told it’s getting intermittent spark but not sufficient enough

Me and my friend are working on it he is a vehicle mechanic. I had left it outside and was running perfect on last trip went to move it inside garage and would not start turns over fine checked battery and replaced the above parts since then and still won’t start last trip was just a ride on hunting trail no incidents

Last trip was about 3 weeks ago maybe 4 new ngk plug the other parts came from a dealer so I assume oem I drained tank and put fresh gas in it about a week ago before tried starting

I am really thinking it’s the kill switch on handle bars but I don’t know how to bypass it

There is a green wire next to the plug for kill switch anyone know that is for

As soon as I unplugged that green wire bike started fine just wondering what that can be connection almost looks like a fuse holder

That’s what confused me to fig it is a ground but to where

Replaced ignition and problem solved. On separate note was problem before switching from reverse to neutral any ideas