1997 Chevrolet Camaro Windows and radio wont work?

I recently purchased a 97 Camaro. About a month after I bought it, I noticed the driver side window would stop working every once in a while. I also noticed that if I hit the door in a certain place it would start working again but eventually cut back out. Then shortly after I replaced the motor thinking that would solve the problem it started to cut out again but hasn't worked for almost a month now. And now on top of that my radio wouldn't turn on and hasn't since, along with my odometer. Any idea what the problem would be?