Power window switches mysteriously quit!

All the switches except the drivers side front two window switches are not working at all. I can't open the back windows, the passenger can't open their window. Which circuit is the problem located in?

The master override or lockout switch would be the first place I'd look at.

After you check out the lock switch the harness is pretty easy to get to in the driver side door. Once you take off the door panel its right there.
Its easy to figure out what colors are what using a volt meter. I wasnt able to find an accurate schematic.

The harness on the inside of the vehicle is a little harder. Just make sure if you take the harness apart you tape it back up real good. If you dont you will cause many more problems.