Abstract: A side wing plow positioner for locating a wing plow in a retracted position against a vehicle without obstructing vision from an adjacent side window in a passenger cab of the vehicle. The positioner comprises an elongated guide track secured to a rear portion of the wing plow adjacent a discharge end thereof and in a substantially vertical position from a lower edge thereof. A slide member is engaged with the track for limited longitudinal displacement therealong. An arresting lug retains the slide member in a lower end portion of the track. A linkage is secured to the slide member for displacing it in the guide track. The arresting lug has an automatic actuation mechanism to arrest the slide member in the lower end portion.