Towing Hitch Voltage Provider, for the Vauxhall Cascada.
Allows the connection of pins 9, 10 and 11 - mainly used for supplying power to the trailer appliances while driving.
These pins are currently not assigned to the trailer wiring harness. The functions of these pins are:
- Pin 9: Power supply
- Pin 10: Load supply
- Pin 11: Ground load supply