The Genuine VW Volkswagen Door Wiring Harness - 11A970401 is a replacement wiring harness designed specifically for Volkswagen vehicles. It is used to connect the electrical components in the door, such as the power windows, locks, and mirrors, to the main wiring system of the vehicle. This harness is made with high-quality materials and is an exact fit for the original wiring in the door. It is an essential component for ensuring the proper functioning of the door's electrical systems.