The truck was off for hours and suddenly the front and side marker lights turn on?

Truck is off for hours and suddenly the front and side marker lights, the rear taillights, the instrument cluster lights, the 4wd indicator lights, as well as the buzzer/chime with door closed turn on and stay on. The doors also locked themselves. They all shut off when I removed fuse #3 from fuse box at the end of dash. The owner's manual says fuse #3 is for Courtesy lamps, Cargo lamp, Glove box lamp, Dome reading lights, Vanity mirrors and Power mirrors. When fuse #3 is replaced, everything stays off for a few hours, and then turns on again. Now with Fuse #3 out, just the dome lamp and courtesy lamps come on with the door closed and truck off. I noticed that Circuit Breaker A was extremely hot (Power door lock, 6-way power seat, Keyless entry module). Could it be a bad relay, and which one would that be? Am I having a wiring meltdown behind the fuse box? I haven't been able to find a bad ground and the fuse and breaker do not blow, at least there is still continuity through them. Any suggestions would be appreciated. Thanks.