Mirrors: Description and Operation

Outside Rearview Mirror Assembly:

Circuit Operation
The position of each outside rear view mirror is controlled by two motors. These motors are polarity sensing, or reversible, and are located inside each housing, behind the mirror. One motor tilts the mirror either left or right, and the other motor tilts it either up or down. Power to the motors and their polarity is controlled with switches located in the power mirror controller. The switches that control the direction of mirror tilt are located behind the control ring on the face of the controller. Located in the center of this control ring is a toggle switch that directs the controller's output to either the drivers (L) mirror or passenger's (R) mirror.
Located behind each side of the control ring are two sets of electrical contacts, and pushing on one side of the ring closes both sets. The set of contacts routes battery voltage, of the appropriate polarity, to the mirror motor selected by the central toggle switch. Pushing the opposite side of the ring routes voltage to the same motor, but reverses the polarity, causing the mirror to tilt in the opposite direction.