Genuine OEM Volkswagen Sunroof Wiring Harness, part number 3G9971648B. This electrical harness is vital for the proper function of the sunroof system, providing all necessary power and signal connections. It ensures seamless communication between the sunroof motor, switches, and control modules. Opting for a genuine OEM wiring harness guarantees correct pin configurations, high-quality insulation, and precise lengths, which are crucial for reliable electrical performance and preventing intermittent faults.