2004 Honda Civic Radio

Electrical problem
2004 Honda Civic 4 cyl Manual 74,500 miles

My car battery died and I tried to install the battery myself but the person who sold me the battery gave me the wrong one. I ended up connecting the cables incorrectly(positive to negative and negative to positive) and there was a huge spark. Once I realized that I was given the wrong battery I went back to where I got the battery and got the correct battery. I connected the new battery but then my car wouldn't start. I found out that I had shorted out a fuse/circuit so I got a replacement fuse/circuit and the car started right up. The only problem is the radio still does not work. I tried replacing the fuse for the radio but that did not help. The radio still will not turn on. It doesn't even display "CODE". Can someone tell me what is wrong or what I can do to fix the problem?