Amazon.com: CXTM 7 RV Blade to 6 Pole Round, 6 Way to 7 Way Adapter 7-Way Blade to 6-Way Round Trailer Adapter 7 pin to 6 pin Trailer Wiring Plug Adapter : Automotive
Trailer Wiring Diagrams | North Texas Trailers | Fort Worth
Replacing 6-Way on Trailer With 7-Way Connector | etrailer.com