Vauxhall Genuine Vauxhall Insignia Zafira Astra 13 Pin Towing Electrics Voltage Provider Allows the connection of pins 9 10 and 11. Used for supplying power to the trailer appliances while driving. These pins are currently not assigned to the trailer wiring harness. Pin 9: Power supply. Pin 10: Load supply. Pin 11: Ground load supply. Price: £36.59 (0) Quick view View Options Compare
