4 Pin To 5 Pin Trailer Connector Weather-Proof Multipurpose Flat Trailer Wiring Adapter Black Trailer Wiring Harness Adapter For The 4 Pin To 5 Pin Flat Wire Harness Adapter is perfect for converting 4-way flat vehicle sockets to 5-way flat boat trailer plugs. Designed specifically for boat trailers with surging brakes, it protects the terminals from water and dust when not in use. The thickened PVC wire coating material ensures durability and longevity. Specification: Name: 4-Way To 5-Way Flat Trailer Wiring Adapter Material: Rubber + PVC + Copper wire Net weight: about 70g Product size: about 16x16x4cm/6.3x6.3x1.57 inches Packing List: 1* 4-Way To 5-Way Flat Trailer Wiring Adapte See more product details 1.Use Easily: Add a fifth wire for reverse light wire and connect your vehicle's 4-way flat cable to a 5-pin socket on your boat trailer with ease. No more hassle. 2.Ensuring Safety: Designed for boat trailers with surging brakes, this adapter is suitable for any vehicle model with 4-way flat connectors, ensuring a consistent and secure connection. 3.Offer Protection: Our 4-Way to 5-Way Flat Trailer Wiring Adapter is equipped with rubber dust covers on both male and female connectors, which provides protection to the terminals against water and dust when not in use, adapting to bad weather and ensuring longevity. 4.Install Easily: Easily splice the blue wire onto the reverse light wire and connect the adapter to your standard vehicle-side connector with no need for special tools. 5.Dependable and Sturdy: The 4-Way to 5-Way Flat Trailer Wiring Adapter boasts durability, utilizing thick PVC wire coating material and copper wire with good conductivity for continuous, dependable use. _x000D_ _x000D_