2004 Jeep Grand Cherokee interior lights, locks and windows repair

[josh83]

My 2004 Jeep Grand Cherokee's power locks and windows recently stopped working. No switch or button on each of the 4 doors work including locks and windows. This all happened at the same time so I assume it's faulty wiring or a fuse problem (rather than a motor problem). Also, when the interior lights are set to "AUTO" they all stay on, another reason I think it's wiring in the door panel. I am not too experienced with car repair, but I feel like this is something I could replace myself instead of paying hundreds for a shop to do it. If someone could provide a detailed explanation of a car's electric window system and how to fix my issue, that would be highly appreciated.