So I did a little poking around and noticed that one end of the negative cable (has a label on it that says negative) is not connected to anything. It was just kind of hanging there. I noticed a screw head laying on the ground that looked like it snapped off and saw where the other part of the screw was still in the hole. As far as I can tell, the negative cable was attached by this screw to the metal frame near the propane tanks. Seems like a ground? Could this be my battery issue? I'm still working on getting the broken off piece of screw out and finding a new screw that fits to use.