Amazon.com: Nilight 7 Way Trailer Plug Y Pigtail Splitter Double Brasse 7 Pin Female to Dual Male Trailer Plug Round Blade Connector for Connecting Slide in Truck Camper and Trailer Y Splitter,
Pollak 11-720 Heavy Duty Zinc 7-Way Round Pin Trailer Wiring Connector - Female Trailer End | Hanna Trailer Supply
7-Way Round to 7-Way Flat Adapter | Innovative Products of America