I have a 2000 plymouth neon?

I have a 2000 plymouth neon I just bought it and the radio play one time i unhooked and hooked it back up cause I was going put in a cd player now the cd player or the factory radio wont work at all. Some one help me I checked the fuses there all good. But in the mileage box in the car it says door fuse when you crank it. Can someone help me with these 2 problem