So, this is the signal setup that I originally had, with dedicated lights in the back. I can definitely put the signal to one bulb in the housing and brake to the other bulb, but this doesn't account for the tail lights. As I was thinking about it and some reading from the HAMB, these devices were originally setup to be placed after the vehicle's lights and before the trailer. Perhaps I just need to add in some additional bulbs before the converter, under the bed, then maybe it will work as it should?