I have an 03 500 Bullet and the headlight only comes on when the engine is running. I'm curious as to how it is wired to accomplish this. I have a manual with a wiring diagram but some of the printing is fuzzy and some of the wire colors are different than mine. I was wondering if it is wired directly to the alternator or is there some type of current activated switch? I read somewhere about an AC-DC system. Again,how does this work other than running the AC through a rectifier to charge the battery. Sorry for all the questions but I'm not at all familiar with RE electrics and I like to know how things work. Thanks for any help.