Power window motors, power trunk lifts, door locks, etc. need to reverse the direction of rotation of the motor in order to work. This is done by reversing the voltage polarity to the motor wire leads. This Reversing Module is needed when you want to use a switch that doesn’t automatically switch (reverse) both the positive and ground to the electric motor (such as a 3-wire switch or remote control).
Just 1/2″ square x 5/8″ wide – small but mighty!