Bench tested power window motor from 1997 lariot 4.6 2x. motor works both forward and reverse connected to switch will only go in the up direction. appears switch not reversing polarity to motor. new switch new motor. passenger works from both driver and passenger switches. never buy a window motor from Napa auto parts!!!! Its cheap and uses plastic case to lock down the motor with wood screws. Dang thing was $65.00 bench tested my old motor and worked fine. It will only go one direction through switch. any help ?!?!?!