Genuine OEM Volkswagen Door Wiring Harness, part number 3CN971120BK. This wiring harness is responsible for connecting various electrical components within the vehicle's door. It facilitates the operation of power windows, door locks, mirrors, and speaker systems. The harness is designed for precise routing and secure connections within the door assembly. Genuine OEM parts are manufactured to exact specifications, ensuring reliable electrical conductivity and long-term durability, crucial for the complex electrical systems in modern vehicles.