I have found a lot of bad contacts inside the window and seat switches. Most of the time, I can take the switch apart and clean the contacts. The p/w switch is kind of unique in how they distribute the 12v power to all 4 switches. I remember some kind of jumper between the individual switches. If you do have 12v going the switch connector, then the relay is okay. Try cleaning the contacts in the switch. Another thing to check is the circuit breaker at the window motors. There should be one at each motor that is connected to the ground terminal of the motor and the other side grounded to the chassis. Good luck.