Wiring issue, need help

get a volt ohm meter and learn how to use it. then a wiring diagram and learn how to read it. next follow the power through the bulk head connector and see if it made it through without a voltage drop. also leave the head lights on wile you are checking so their is a load on it. it should stay near 12 volts.semi easily access test points are fuse box and head light switch.a possible problem is bulk head connector. this is a good opportunity for u to learn..