Genuine OEM Volkswagen Wiring Harness For Alternator, part number 5Q0971230PM. This wiring harness is designed to connect the alternator to the vehicle's main electrical system, facilitating the charging of the battery and powering vehicle electronics. It is identified as part number 1 in the diagram. The harness is constructed with high-quality wiring and connectors to ensure reliable electrical conductivity. Genuine OEM parts are essential for electrical systems to prevent voltage drops and ensure proper component function.