We just bought our 1999 Catalina 34 Avalon. Absolutely love it so far but I’ve many questions. One thing that confusing is there are two battery switches, one above the nav station and one on the end of the starboard settee bench, right behind the sink cabinet. The batteries are inside the settee, one start and two house. I haven’t yet had time to trace the wires to figure this out. So… is this normal and if so how do these two switches relate to each other?