Trailer Plug Adapter 6 Pole Round Pin Type M To 4 Way Flat FM - 4 State Trucks
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
ABN 1886 - 4 Way 4 Pin Plug 20 Gauge Trailer Light Wiring Harness Extension 1ft - Walmart.com