I am adding a BP-100 to my 24v system which charges my 12v house bank with a 24/12-70 DC DC charger. I want the BP-100 to disconnect the DC DC charger when the voltage goes low on the 24v batteries. Will it do this like I'm thinking? If so, what pin on the BP-100 do I connect to what pin on the DC DC charger? It's not clear in the instructions.