batman wrote on 03/26/19 at 18:20:07:It could be that the ground strap from the battery, to the motor case needs to be cleaned up ,the strap connects to a bolt on the clutch side of the motor(the opposite end from the battery) ,about 2"above the oil level site glass , and about 2" in (on the right, center case) . If it's not clean and tight nothing on the bike will want to work ,motor or lights.
I will have to check on that next time I get the chance. However it runs fine when I start it up and first start riding it. Just when I let the engine idle after I get it going and on the road for a bit. (Such as when the clutch is in or I come to a stop.)