Nissan

[39mto39g]

SH
There is only one way your electric window can work. If there is electric to it from the source designed into the system or electric getting to the motor threw an undesigned way, If your windows operate when wet without you controlling the switch the electricity has to be comming from an undesigned source which is a hot wire going to ground. Your charging system gage on your dash may not show a drop in voltage because your battery is good, In order to have a significant drop in voltage on your gage your battery has to be low and your charging system at its max.

Hears another easy test for your system, Disconnect your ground cable on your battery, Use another car/Battery as the Ground and connect a wire from the other vehicle negative post to a test light and the positive wire from the test light to your frame with your ignition switch on, if there is a light you have a hot wire to ground. This one may not work because of the tires, if there is no light then hook the negative wire on the test light to a ground such as a steel light pole or the wire on the outside of a wood light pole.
If your hot wire is going to ground it will light the test light.
If you don't understand, I'll try to explain better.

Do it threw PM
Ron