Genuine OEM Volkswagen Door Wiring Harness, part number 3CN971120AE. This harness is responsible for routing electrical signals and power to various components located within the vehicle's door. It ensures the proper functioning of features such as power windows, locks, mirrors, and speakers. The harness is designed for precise fitment within the door cavity. Genuine OEM wiring harnesses are manufactured to strict tolerances, ensuring reliable electrical connections and long-term durability, preventing intermittent faults or premature failure.