I finally got my lighting connected on my 2015 Ford F-150. I ordered the Hopkins Universal Tail Light Wiring Kit Item # HM55999 along with the Roadmaster Brake-Lite Relay Kit Item # RM-88400 from E-trailer. I didn't use the scotch lock connectors that came with the kit because I have chased bad connections with them for 40+ years as an auto technician. I soldered and used heat shrink to seal them for a very secure connection. I did use butt connectors on the brake light relay because there is just no room up under the dash to get a soldering gun. The instructions for the brake light relay wanted you to wire it into the motor home parking lights so you needed to have the lights on on the motor home for the brake lights to work. BAD IDEA! I wired mine into the charge wire I ran from the motor home to the toad before a diode so when you connect the wiring from the toad the charge wire activates the brake light relay. MUCH BETTER IDEA.
I want to thank everyone for their suggestions an especially JDL for all his help!!