Hopkins 7-Pole RV Blade Round Vehicle to Trailer Wiring Connector in the Trailer Parts & Accessories department at Lowes.com
Need Wiring Diagram for 7 Blade Trailer Connector - Airstream Forums
Amazon.com: Nilight 7 Pin Male Trailer Round RV Blade Connector Socket 7 Pole Trailer Plug Heavy Duty 7 Way Vehicle Side Replacement Plug Socket 6-24V for Trailer Tow Hitch Car RV Boat