A power unit to replace the manual crank handle of a vehicle window, including a housing for a drive unit that will connect to the splined shaft from which a crank handle has been removed, the power unit including drive means to be affixed to a vehicle door when the drive means is coupled between a splined output shaft of the drive means and a splined shaft connected to operate the window; the housing having an exterior face plate and a surrounding wall with each having an exterior decorative finish and with a control switch for the motor projecting through the housing.