[Fitment]This trailer wiring harness kit fits for Ram 1500 2500 3500 2014-2023. The rear 4-pin trailer wiring connector replace 56478 [Standard 4-Way Output]The wiring harness provides a Standard 4-way flat socket output, for plugging in and towing a trailer, connecting easily to trailer tail lights, turn signals and brake lights. [Reliable SMT Circuitry]Built with Mount Technology (SMT) circuitry, the rubber dust cover of 4-pole trailer lighting wire harness the generation of less heat, Promoting long-lasting use and weather resistance.It easily fits onto the 4-way flat connector when not in use. [Easy installation]Plug-and-play design saves time and effort by eliminating the need for extra cutting and assembling, which can help you complete the installation easily Colour:Black Material:plastic Package Contents: 1x Trailer Wiring Harness Kit Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.