So today i unplugged my battery to clean my maf sensor! later on went to plug battery back in and decided to check my radio...had a bad feeling! turned it on and it came on so i was like fewwwwwww i didnt blow the fuse and pressed cd and was like wtf no sound...so i turned it up more and the sound is so low no matter how high i turn it! checked the wiring! checked the fuse! no of those! wtf is going on?