Genuine OEM Citroen Main Wiring Harness, part number 9815290080. This essential electrical component serves as the central nervous system of the vehicle's electrical architecture, distributing power and signals to numerous systems and modules. It connects critical components across the engine, chassis, and interior, enabling the operation of various functions. Choosing a genuine OEM main wiring harness ensures precise fitment, correct connector types, and factory-standard wiring integrity, which is crucial for the complex electrical demands of modern vehicles.