I also have a factory installed battery disconnect switch at the end of my trailer. It is as far away from the battery as you can get. I really don't understand the purpose. He said it was to keep the battery from draining when not in use but we have always just disconnected the actual battery to keep that from happening. I guess it is the same thing???
Steve and Brandi & our "Pit" crew Bella
Ill look at it closer but mine definitely has extra wire, it's not, physically, inline at all. Wire from front of trailer half way back to cut off then another wire all the way back to the front of the trailer.