10ft 4 Pin Trailer Light Wire Harness Extension With 18AWG Copper Core Wire Male And Female PVC Plug Pro Grade Heavy Duty Replacement For Trailers Boats RVs Snowmobiles Watercraft Easy Install

Single 10ft 4-Pin Trailer Light Harness with Copper Core
✔️ 10ft single-length, 18 AWG copper core, PVC, 4-pin, UV resistant

This heavy-duty trailer light wire harness extension provides a reliable power and signal path for 4-pin connectors on cargo trailers, boats, RVs, snowmobiles, and watercraft. Made with 18 AWG copper core wire and corrosion-resistant PVC connectors, it is designed for long life in harsh environments.

✅ 10ft length with 18 AWG copper core wire
✅ White ground, Brown running, Yellow left, Green right color coding
✅ PVC sealed connectors resist corrosion and UV exposure
✅ Heavy-duty construction for reliable on-trailer lighting
✅ Direct replacement for worn or damaged 4-pin harnesses

💡 What is a 4-pin trailer light wire harness used for in cargo trailers and watercraft?

It is handy for quick, dependable trailer wiring that powers lights and signals.

• It matches standard 4-pin plugs on most trailers and watercraft
• Color coded conductors White ground, Brown running, Yellow left, Green right
• Copper core 18 AWG wire and PVC sealed connectors for durability

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