The 7-Blade to 6-Pole Round adapter allows you to adapt down from a 7 Blade connector on the vehicle to a 6 Pole round trailer side connector without having to rewire the truck or trailer. This adapter also allows you to open it and change the pin locations for auxiliary and electric brakes making it the perfect adapter for either 6 Pole Round wiring code. An included dust cover adds an extra layer of weather proofing for long lasting performance. Product number 47545.