So I have had a 1997 jeep grand cherokee for almost 2 years and ever since I got it the power windows, locks and almost every other control doesn't work on the driver master switch. The only thing that works is the mirror adjuster, and the power lock for the one door only. The Passenger door works perfectly fine, and can lock all the other doors. I need some advice on how to diagnose this. This is what I know, the window regulator works tested 3 times, the switch isn't broken (tested 3 switches), I have tested all the wires in the boot from the door to the car and still nothing. Any ideas or help would be greatly appreciated.