Genuine OEM Volkswagen Door Wiring Harness, part number 3CN971120AC. This harness serves as the critical link for all electrical components located within the vehicle's door. It facilitates the transmission of power and data signals for features like power windows, central locking, mirror adjustments, and interior lighting. As a genuine OEM part, it is engineered to meet the exact electrical and physical specifications of the original component, ensuring seamless integration and reliable performance.