Hey LaughingGravy,

So you are at the end of the rope with this Camry. huh? I know exactly what you mean....so allow me to tell you what's up without any further grief....remove the door panel window switch controller from the door panel....you should be able to locate many wires that are battery voltage, (with key turned on).....so you got voltage, big deal, right? OK....so now the kicker, check for ground on the black striped wires, and you will probably not be able to locate any ground...that's the issue, no ground in the wiring harness circuit. Simply run a seperate ground wire from the interior of the car, through the rubber harness in the door, and run the wire to all grounds, simply tie into them as you like, and this should cure your issue. As long as your seat belt retracts and operates properly when opening the doors (front) you should be able to fix the issue with the new ground supply.

Let me know if I can help you with it, and how it turns out.

Take care, happy wiring.