So this all started when I took out a charger from my 12 v...along with the metal housing unplugging not only the negative but another wire that connects into a blue connector (94 pu 22re). So instead of researching which one it went to I put it in the spot I thought but it blew something...now my fuses all test well I checked the back of the radio but I still can't get sound to come out of the speakers even though my radio powers on...other weird things is my door buzzer quit working, my dome light is out and I checked my speakers and they aren't blown..tried changing radios too to no avail...is there something between the radio and speakers I could've blown? Any advice appreciated!!

 

Just powers on? Anything else that radio does fine, or others that radio does not do anymore? Cigarette Lighter socked works again?
Got multi-meter? (Pls see signature)