2019 Ram 2500 5th Wheel/Gooseneck 90-Degree Wiring Harness 2019 Ram 2500 - 5th Wheel/Gooseneck 90-Degree Wiring Harness w/ 7-Pole Plug - GM, Ford, Ram, Toyota - 9' Long. T-Connector works with fifth-wheel and gooseneck trailers and retains use of your Ram 2500's factory 7-way connector. It connects your factory 7 4.8/5(260)Category: Custom Fit Vehicle Wiring Ram 2500,3500 Fifth Wheel / Gooseneck Wiring Harness Ram 2500,3500 Trailer Tow Wiring Harness Kit for 5th Wheels and Gooseneck Trailer Systems. Features a 7 way connector. Mounts in bed and plugs into vehicle wiring, no splicing required.