Description
When you’re hauling hay wagons to the next field, pulling a small trailer to the equipment shed, or moving that utility trailer full of fence posts, you need trailer lights that work every time. A corroded or damaged plug means no running lights, turn signals, or brake lights—and explaining to the county sheriff why your trailer’s dark isn’t something you want to deal with. This 4-wire round plug keeps your basic lighting system working reliably trip after trip.
What You’re Getting
- 4-pin configuration handles your basic trailer lighting needs—running lights, left turn, right turn, and ground
- Round male design fits standard 4-wire female trailer sockets found on most utility trailers
- Durable construction that resists moisture, dirt, and the corrosion that kills cheaper plugs
- Secure connection that stays put even when you’re bouncing across rough ground or gravel roads
Built for Real Farm Work
This plug handles the lighting for smaller farm trailers and utility trailers—the kind you use for moving equipment parts, hauling feed, or pulling small implements between fields. It’s perfect for those lighter-duty jobs where you don’t need the full 7-pin setup but still want reliable lights that meet highway requirements when you hit the road.
Made to Last
Farm trailers see everything from morning dew to afternoon thunderstorms to dusty harvest conditions. This plug is built to handle those temperature swings and moisture exposure that turn cheap connectors into expensive problems. The weatherproof design keeps connections clean and corrosion-free.
Installation Notes
Standard 4-wire color coding makes installation straightforward—white for ground, brown for running lights, yellow for left turn, and green for right turn. Strip your wires clean, make solid connections, and you’ll have lights that work when you need them. Always test all your lights before heading out on public roads.



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