Specific wiring for upgrading the original headlight washer system for VW Polo 6R Easy installation (approx. 2 hours) This wiring connects the central electrical system control unit to the high-pressure pump (engine compartment), the water level sensor (engine compartment) and the instrument cluster Components such as pump, sensor and hose will also be required Scope of delivery: Wiring Relay Notes: The HWS system must be activated via diagnosis (on-board network control unit)