1997 GMC Sonoma Same old Headlight song!

It all started on a cross country trip, when my headlights no workie-workie, but DRL's and brights worked just dandy. So everybody got the high-beams for about 3mos. (I know, yeah, I'm that guy) but now my brights stopped working, check mating me into some dreaded mechanic work. Tail lights and DRL's still working so I think I've narrowed it down to a broken wire, bad relay, corroded switch or a blown fuse! Just thought that there may be a couple of usual suspects for this problem that I can handle so I can get back to watching football. Thanks and I'll be checking fuses in the mean time.