1993 Chevy Corsica Dash Lights

Ok, I bought this car about a year ago just to get me around. I hooked up my own CD player in it. Things were ok for a while, then my speedometer lights and the other interior lights would click off, then I checked the fuse and noticed the fuse was blown. I replaced fuse after fuse after fuse and they would eventually blow out. Then I realized that there was one wire on my stereo that was loose and it was touching metal causing a spark. But now, stereo is hooked up correcty, no loose wires, but the dash lights still dont work and the fuse is fine. So would it be a light bulb that maybe blew out or could it be the whole circuit is fried?