I changed my alternator & battery now my radio dosnt come on what should I do ? The fuses are good do the radio has a fuse in it ?

Hello this is Alex from E&J Auto Service by any chance does this car have 2 fuses for radio you might want to check that first and if there's no second fuse you might have to bring it in to get checked out let me know if that works

Hi there its possible the radio is in theft mode. you should have a 4 or 5 number code to reprogram it. G&R Auto Repair

Why was the alternator and battery changed? Overcharging may have damaged some things?