so I recently mixed up the battery terminals and blew the battery fuse.. after replacing the battery fuse, everything works now except for the headlights and the radio.. could the mixed up terminals damage my ballast or blow the bulbs? Im replacing the lighting relays tomorrow to make sure.. please help

 

check the fuses for the headlights and the radio. They're most likely under the hood

 

oh forgot to mention, i did check the fuses and tested them w/ known-good fuses.. thanks brian.

 

a way I always test my ballast is to hook them straight up to the battery. If they work hooking straight up to the battery, then they're still good. I believe there's a fuse inside the car for the radio as well. If all checks out correctly, may just have a messed up relay

 

yeah i checked the radio fuses.. i really do hope its as simple as a relay though got a lot of car expenses right now.. don't want to put my other stuff on hold