7-Way to 5-Way Coiled Trailer Harness - Boat Mate Trailer

Keep your trailer wiring tidy and protected with the Boat Mate 7-way to 5-way coiled harness. The telephone-style coiled cable stretches when you need extra reach and retracts to reduce slack, helping prevent dragging wires, snags, and premature wear. Ideal for boat trailers and utility trailers that need to connect a 7-way vehicle plug to a 5-way trailer connection.

• Adapter type: 7-way to 5-way trailer wiring harness
• Cable style: Coiled extension design for flexible reach and reduced slack
• Durability: Molded connectors with strain relief for added protection
• Fitment: Common for boat trailers using a 5-way (adds reverse/lockout circuit compared to 4-way)
• Use case: Clean, organized wiring between tow vehicle and trailer

FAQ

• What’s the benefit of a coiled harness? It helps keep wiring off the ground while still providing stretch for turning and backing.
• Will this work for boat trailers? Yes—this style is commonly used on boat trailers that use a 5-way connection.