Genuine OEM Volkswagen wiring harness, part number 6C0971349MD. This harness is responsible for connecting the battery, starter, and alternator terminals within the vehicle's electrical system. It ensures proper power flow and communication between these critical components. The part is highlighted as number 1 in the provided diagram. Genuine OEM wiring harnesses are manufactured to exact specifications, ensuring correct wire gauge, insulation, and connector integrity for reliable electrical performance and longevity.