What are the different tow bar electrical connectors?

The 7 pin option contains the necessary connectors to operate a trailer lighting system i.e. brake lights and indicator lights. The 13 pin harness provides additional connections for powering special equipment e.g. on a caravan, such as a fridge, cabin lighting, leisure battery charging and reversing lights. Ford electrical kits are built to the highest safety standards to prevent any failures to your vehicle's electrical system and ensure the safe operation of any additional features.