I will try to explain a bit better
I read through all of my stuff and I can see how it was pretty confusing.
1. I used a jumper from the 12VDC of the battery to the Running Lights pin (on the outside of the camper hitch - no vehicle involved). The lights all turned on
except the right rear.
2. I used the same jumper and now tied to the Right Blinker pin. the right rear light lights up (solid of course since no blinker relay is involved).
3. I used the same jumper and now tied to the Left Blinker pin. The left rear light lights up (solid of course since no blinker relay is involved. At least double the brightness of the left rear in step 2.
Now... that is the camper side of things. When I had my vehicle connected, the right blinker did NOT work. I will have to test again when I take the camper back down (we were prepping it for travel next week). I will likely take it down tomorrow and find out more from the vehicle side. But, I know the vehicle 4-pin works with every other type of vehicle - so I don't think the wiring is wrong there.