So I bought a used ARE camper shell off of Craigslist for my 2014 Ram 1500. I am trying to wire in the 3rd brake light and having trouble finding the correct wire to tap in to. I tested the wires from the driver side brake light, but the hot wire is hot for blinker and the brake light. (Single bulb system) I also tested the factory trailer connection behind the bumper. One wire is hot all the time and I found 2 that are hot for blinker/brake light. They are even on the same system in the fuse box... Any help or suggestions would be greatly appreciated.