2000 560 Sedan Bridge Raymarine c-120 12" color chartplotter, B&G networked Auto Pilot , Furuno Ra
Engines
3406-E cat. diesels
The one marked on/off is most likely for storage...long term...im thinking it totaly kills everything.... bildge pump .... radio mem. that would be my guess
I think Lady Ashley is correct. When I had my second battery, battery switch and combiner installed the installer asked if I wanted to leave my original on/off switch in the boat or remove it. I opted to let them take it out so that I only use the one new switch.