Amazon.com: Reese Towpower 8536200 6-Pin to 7-Blade Trailer Adapter with Center Pin Brake, 1 Pack : Automotive
6 Pin Small Round Plastic Trailer Plug/Trailer Connector - China Connector, Trailer Cable | Made-in-China.com
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
How to Wire a 6 Pole Round Trailer End Plug | etrailer.com
4-Way Flat to 6-Way Round Pin Connector (Plastic)
Choosing the right connectors for your trailer wiring