MK386151
Door Lamp Switch
Mitsubishi FUSO®

The Door Lamp Switch, also known as part number MK386151, is a small electrical component that is responsible for turning on and off the interior lights of a truck when the door is opened or closed. This switch is typically located on the door jamb and is activated by the movement of the door. When the door is opened, the switch completes a circuit which sends power to the interior lights, illuminating the cabin of the truck. Conversely, when the door is closed, the switch breaks the circuit, turning off the interior lights. The Door Lamp Switch is an important part of any truck's electrical system as it ensures that the interior lights are only on when needed, conserving battery power and prolonging bulb life.