1997 Dodge Neon

Start by checking all your fuses, if they are all good trace the wires runnig from the radio for shorts or open circuits if these are good trace the wires runnig from fog lights and control panel for open or short circuits

You used the black ground wire in the car's gray connector to ground your radio. That's the dash light wire, not a ground wire, so now your dash lights are shorted to ground through the antenna cable. Unplug your radio and the antenna, replace the dash light fuse, and the lights will work. There was a ground wire clipped to the back of the old radio. That's the one to use for your new radio.

If your old radio was a Chrysler original cd / cassette player, don't throw it away. They are extremely high quality.

Caradiodoc