The FAE 67340 Door Contact Switch is designed to accurately detect when a vehicle door is opened or closed. This critical component plays a vital role in the operation of various vehicle systems, including interior lighting, alarm systems, and convenience features. When a door is opened, the switch sends a signal to the vehicle's computer, triggering the interior lights to illuminate and potentially activating the alarm system if armed. Conversely, when the door is closed, the switch signals the systems to deactivate. This reliable switch ensures that these functions operate as intended, providing convenience and security. Crafted with quality materials, the FAE 67340 is built for durability and long-lasting performance. It is engineered to meet or exceed original equipment specifications, guaranteeing a precise fit and proper functionality. Replacing a faulty door contact switch can resolve issues such as interior lights not turning on or off, or false alarms.