Audio Systems: Headlights, wheel hubs, headlight switch

Question
Thank you for answering my question. I should have told you this the first time, I have already replaced the headlight switch, well kind of, it was from a salvation yard, so it was a gamble. But the switch worked for the parking lights, but not the head lights, so im pretty sure the switch worked. So if it is not the switch, what could it be?

Answer
you possibly might have a stuck or bad headlight relay, normally in the engine compartment. i guess the salvage part is a 50/50 shot, i'd never use them for electrical parts. doors, wheel hubs and such are ok frome those. also check all grounds from chassis.....g.....