Attached some photo's of the wiring and the solar controller.
I'm not familiar with the company, I won it at the overland rally.
The wires with the heat shrink are the quick disconnect. You can see that it is currently plugged into my trickle charger which is working. It was at 75% earlier today, after several hours it's almost fully charged. The smaller gauge wires with the electrical tape is connected to my rocker panel.
The lower terminals are where the two 6V's are connected together.
Please let me know if I am doing something wrong