I'm pretty sure it's not the fuses. I changed # 3 and 9 but it didn't change anything. Besides, all the other electrical components that go through those fuses work fine. I'm not sure about the potentiometer but there wasn't a broken connection when I tested it on the continuity tester. I tried hardwiring, that didn't work either, so it's probably not the pot. I'm beginning to think it's something to do with the light switch, because I just noticed that the fog lights and parking lights don't work either.