CURT 57187 4-Way to 5-Way Flat Adapter for Boat Trailer Surge Brakes, Black

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 construction and requires some splicing. All CURT wiring and electrical products come with a one-year limited warranty to give you the assurance you need to tow with confidence.

• BOAT TRAILER READY. This trailer wiring adapter makes it easy to retrofit your vehicle's 4-way flat to plug into your boat trailer 5-way flat, adding a fifth wire for the reverse lights and allowing compatibility with trailers with surge brakes
• EASY GRIP. Plugging in your boat trailer wiring and lights is easy with the ergonomic design of this trailer wiring adapter. It features grips on the sides for a better grip when plugging into the vehicle or unplugging
• STANDARD CONNECTION. This boat trailer hitch wiring adapter plugs into any standard 4-way flat and can be used to connect the taillights, brake lights, turn signals and reverse lights (some splicing required)
• EASY TO INSTALL. This 4-pin to 5-pin trailer adapter wiring comes ready to plug into your vehicle or trailer wiring with minimal splicing required
• DURABLE CONSTRUCTION. For long-lasting use and a reliable connection, the housing of this boat trailer harness adapter is made from durable molded rubber that will never rust or corrode