The original setup inside the basement was a patched together mess. It had stuff everywhere, wires crossing everywhere, and everything delicately balancing on the battery as if at any moment it might slip and short (which had happened a couple times). Obviously, a fire was going to be inevitable. With that in mind I designed a vertical board where I could mount all the electronics and some bus bars. The battery would sit on the cool basement floor where the temperature would increase efficiency. IT IS A MYTH THAT BATTERIES WILL DRAIN ON A CEMENT FLOOR! All batteries will lose energy over time, but a battery doesn't care what it's sitting on.
To start, I needed a board. That was accomplished with some spare wood (first picture).
Then, the electronics would need to be mounted (second).
The new addition of the bus bar helps prevent a short circuit. It's hard to see from this picture, but there is a layer of plexiglass on top of the whole thing. This prevents anything from crossing the two. It hopefully is obvious which side is positive and which is negative. Again, way overdone but better safe than sorry.