My head light wont work, bulb is good, switch is good, wire conections are good, what could it be?

 

Somthing must be wrong with the above things you mentioned. There is orange and red wire coming right off the lighting coil on the stator that powers the light. The voltage regulator taps into it and then it goes to the switch and then to the light. Trace the wire all the way back and see if you can find anything that dosn't look right.

 

Where is voltage regulator located?

 

take the nose peice off and its hooked to the frame on the left side