CURT 4-Way to 5-Way Flat Adapter for Boat Trailer Surge Brakes Model 57187 AddOn_Below91" 3500 HD Model 477078-401743

3500 HD Model 477078-401743

F-550 Super Duty Model 415078-401723

Protect and easily access your equipment with the Buyers Products Gloss Black Steel Underbody Truck Box with 3-Point Latch

The RockerBall fits onto a variety of standard ball mounts -- virtually any ball mount with a 2-inch wide trailer ball tongue and 3/4-inch diameter ball hole

CURT 4-Way to 5-Way Flat Adapter for Boat Trailer Surge Brakes Model 57187 AddOn_Below91" 3500 HD Model 477078-401743CURT 4 Way to 5 Way Flat Adapter for Boat Trailer Surge Brakes Model 57187 This electrical adapter is designed to adapt a 4 way flat vehicle socket to fit a 5 way flat trailer plug. It is specifically intended for boat trailers with surge brakes, adding in a fifth wire for the reverse lights and allowing your vehicle's 4 way flat to easily plug into your boat trailer 5 way flat. This boat trailer wiring adapter features durable molded plastic