so I picked up an 89 v6 for the wife and I've been tinkering with it, I got in the other day and turned on the headlights and within seconds they went out, no radio either I haven't had time to t shoot it because I'm working so much and on my dayys off its raining can anyone give me ideas where to look? replaced the switch and broke the nut...which is a problem in itself but I can't figure out why the headlights just blew out, check all my fuses and they're good, checked the links by the starter and they're also good, my only concern was the one at the positive...post... thing? I don't know the name its by the battery and it has constant 12 volts to it with a single post coming out. so I swapped that fusible link and nada... if anyone has run into this I'd appreciate a few pointers, I got lucky with my camaro apparently and this one is definitely making me work

TIA