Looks very good for back up lights. Northern Tool have them too. Very bright LEDs and little draw. https://www.northerntool.com/shop/tools/product_200648983_200648983 I had thought of doing the same as you. Thank you for the write up to what wire to splice into. My 2017 RTL-T FWD. did not have the wiring harness. I bought the harness and installed it and all the components myself. If any member here decides to add the hitch wiring yourself. Get help. Removing the rear seat without a scratch to the paint is next to impossible. That rear seat is heavy for one person. You have to add two circuit breakers and the control unit for the electric brake. May want to use that option The two brass threaded grommets require you to get a grade 5 or 8 bolt, nut and washer to expand the grommet into the rear bumper. That mounts the 7 pin wiring harness.