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,
Wiring Trailer Lights with a 7-Way Plug (It's Easier Than You Think) | etrailer.com
CURT 7-Way RV Blade Connector Plug (Trailer Side, Black Plastic) 58140 - The Home Depot
Dr Infrared Heater 7-Way Trailer Plug Cord Wiring Harness, Heavy Duty – Dr. Infrared Heater