interior lights not working on 97 grand am

I recently tried to install a sony CD receiver into my 1997 pontiac grand am GT. I could not figure out which wires to connect together, so it did not get installed yet. After this, i noticed that my ABS light and my parking break lights were lit up on the dash, and none of my interior lights were working at all. I tried reinstalling the stock CD player, but it made no difference. Did I possibly blow a fuse while i was tying different wires together? Does the antenna plug have anything to do with this? any help would be appreciated