Courtesy Light Switch, Double Term

The door jamb switch is responsible for turning the courtesy dome light on in your vehicle when the door opens. This is similar to how the refrigerator light always comes on when you open it, but shuts off when you close it. When you open your car door, this little switch spring loaded plunger engages contact points closing the circuit and sending an electrical current to your dome light.

NOTE: To adjust the switch: Install the switch into the door jamb, place something thin over the head of the switch to protect your paint, and gently close the door all the way. The switch will slide in the retaining nut to the proper length.