Door Switch : A simple term for a vehicle’s power window switch, master switch, power mirror switch, memory switch, or power lock switch located on a car, truck, van or suv’s door. These door switches are located on the door panel. A door switch also can be a light or theft switch located on a door or for a door. These door switches can be built in to a door lock, door latch door hinge or located on the door or pillar. Door switches are usually dealer specific parts, but in a few cases are available aftermarket.