Check the listing for details. CURT 58050 TRAILER CONNECTOR. Condition: New. Listed at 22.69 USD. Like trailer hitches and ball mounts, electrical connectors range all over the board in shape, size and capability, but no matter what your trailer's electrical functions are, you need a solid connection to keep the power flowing and ensure safety on the road. CURT electrical connectors are designed and manufactured to give you a reliable connection every time you plug in your trailer. This 4-way flat connector is designed to supply power for tail lights, turn signals and brake lights, as well as a ground connection. It features durable rubber-molded construction and is made with 72 Inch of standard color-coded, bonded wire to easily splice into your trailer's wiring system. This 4-way flat connector is a male-end plug, specifically designed for the trailer side of the connection.