Check the listing for details. 2X 4-Pin Plug Trailer Light Wiring Harness Extension 18 AWG Flat Wire Connector. Color: Black, Condition: New. Listed at 12.39 USD. Durable & Convenient Use: The 4 flat trailer wire is 18 AWG color-coded to easily splice into your trailer's wiring system, safe enough, and no need for splicing wires. Good Product: This is a male & female 4-flat marine trailer wiring harness with 4-way conductors and a white ground wire designed to split at the trailer tongue and run down each side of the trailer.Durable & Convenient Use: The 4 flat trailer wire is 18 AWG color-coded to easily splice into your trailer's wiring system, safe enough, and no need for splicing wires. Good Product: This is a male & female 4-flat marine trailer wiring harness with 4-way conductors and a white ground wire designed to split at the trailer tongue and run down each side of the trailer.