I haven't investigated this on a schematic but I read somewhere that ALL the windows are powered through the driver's door. Try running a 12V jumper to the power terminal at the driver's door. If the windows work the task becomes finding where the 12V gets lost on the power side. If it doesn't work try jumpering the ground side to chassis ground. If the windows work now, find the break on the ground side. If neither jumper proves out stay on the track of power and ground. The fault has to be one or the other to effect all the windows.
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Mr. Shannon DeWolfe -- (I've taken to using Mr. because my name tends to mislead folks on the WWW. I am a 51 year old fat man ;-) -- KD5QBL
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