4 Pin Trailer Light Wire Harness Extension 10ft 18AWG 4 Way by AUTOMAJOR | Copper core male female PVC plug. Universal fit for trailers boats RV campers towing wiring extension

The AUTOMAJOR 4-Pin Trailer Light Wire Harness Extension adds 10 feet of length to your existing 4-way flat trailer wiring. It connects between your tow vehicle and trailer to extend the reach of the lighting connector, which is useful for longer trailers, boats, campers, and utility trailers where the factory harness does not reach. The extension uses 18 AWG copper core wire in the standard 4-way flat configuration: white (ground), brown (tail and running lights), yellow (left turn and brake), and green (right turn and brake). The color coding matches the SAE standard for 4-pin flat trailer connectors, so it plugs directly into existing wiring without rewiring. Each end has a molded PVC connector — one male and one female — that mate with standard 4-way flat plugs. The PVC housing covers the connection and helps maintain a secure fit in wet conditions. The 18 AWG copper conductor carries the current for LED and incandescent trailer lights. This extension is a universal fit for any trailer, boat, RV, camper, snowmobile trailer, or utility trailer that uses a 4-way flat connector. It works with both LED and incandescent light systems. Two or more can be connected together for additional length if needed. Installation takes seconds with no tools: unplug your trailer connector from the tow vehicle, plug the male end of the extension into the vehicle side, plug your trailer connector into the female end of the extension, and secure the slack with a zip tie or clip so the harness does not drag. Test all functions — running lights, left and right turn signals, and brake lights — before towing. Backed by AUTOMAJOR — towing and trailer wiring accessories.

• Adds 10 feet of length to existing 4-way flat trailer wiring. Connects between the tow vehicle and trailer to extend the reach of the lighting connector. Useful for longer trailers, boats, campers, and utility trailers where the factory harness does not reach.
• Made with 18 AWG copper core wire in the standard 4-way flat color configuration: white ground, brown tail and running lights, yellow left turn and brake, green right turn and brake. Matches the SAE standard for 4-pin flat connectors and plugs directly into existing wiring without rewiring.
• Molded PVC connectors on each end — one male and one female — mate with standard 4-way flat plugs. The PVC housing covers the connection for a secure fit in wet conditions. Works with both LED and incandescent trailer light systems.
• Universal fit for any trailer, boat, RV, camper, snowmobile trailer, or utility trailer that uses a 4-way flat connector. Two or more extensions can be connected together for additional length.
• No tools needed. Unplug the trailer connector from the tow vehicle, plug the male end into the vehicle side, plug the trailer connector into the female end, and secure the slack with a zip tie. Test running lights, turn signals, and brake lights before towing.