Check your fuses first then check rectifiers or regulator they are same thing and you can by new rectifiers really quit cheap do not get sucked in and pay 100 dollars or more when you get one from 10 dollars to 20 dollars on ebay a bike shop will say new need a special one which will cost alot look on utube how to check your rectifier and that should fix it if thats not the problem it is your stator but they usually last for ever