The drivers side power window won't go down. I have taken the door panel off, tested the switch, found power at the switch and have applied power to the motor, which goes up and down when power is applied directly to the motor. I have tried by passing the switch by jumping to the down terminals and nothing, when I jump to the up terminal the window will go up. I don't want the problem to be a wiring problem and I'm hoping for a quick and easy solution? I have replaced the relay, to no avail. thanks