I have 1994 F-150 XLT. A few days ago my power window went on the passenger side. The driver side switch did not work at all and the passenger side switch only worked in the down direction. I took the motor out and hooked it up to a battery and it worked. I pulled the buttons and got them all to work on the driver side window (which still works in both directions). What type of problem am I looking at and how do I start trying to address it from here?

Thanks, Ryan