Ray Lopez

I have a 1998 Jeep Grand Cherokee Laredo. I have a bundle of electronics that went out at once. I turned off jeep one day, went to start it back up, and I had no power windows, no parking lights, no tail lights, no console illumination, no rest defroster, ni intermediate wipers, no automatic head lights, and not sure what all else. I have my check fuses, relays, and circuit breakers. I believe they are good. What would cause all this to go out at once? Need help PLEASE.