I’m installing a lithium battery in my pass through storage on a 292RL, there is a pos and a neg solar charging wires that connect directly to the lead acid battery and the black ground cable that attaches to the frame. There is also a single red wire that looks like it attaches from the bus bar in the pass through to the positive of the lead acid battery. I seems like I should be able to attach the pos of my lithium battery directly to the terminal that the lead acid battery was connected to. Run a ground cable from the lithium batt to the frame, and then run the wires from the solar charge controller to the lithium batt. My only question is does the positive cable that runs from the bus bar in the pass through to the lead acid battery go into some junction box that has other wires in it, or is it a single wire running from the bus to the lead acid battery?
