Blown power outlet/cigarette lighter? on 1990 Oldsmobile 88

While i was driving, a penny fell into my cigarette lighter outlet and it sparked then my stock radio head unit stopped working. I replaced the fuse to see if that was the problem and the head unit turns on, but the digital read out is jumbled up and the outlet won't power anything anymore. I have an aftermarket head unit i can put in. How difficult is it to replace the outlet and get everything working again?

Asked by for the 1990 Oldsmobile 88