Starter Battery/Electrical Charging System Upgrade

[Maine Sail]

Maine Sail, instead of running the wire from the #2 post of the 1-2-B to the starter, run it to the "bottom" (on the diagram) post of the On/Off switch. Same functionality, no?

And, no, NOT jumpering the 2 and C post - never, of course.

Thanks for the clarification! That's why I asked.. Yes that works fine IF the ON/OFF is closer to the 1/2/BOTH. I drew it that way because many boats, Catalina's included, have the 1/2/BOTH in the AC/DC panel (not a fan) and thus the ON/OFF is usually far enough away that the diagram works.

If you have a boat where they can be close to each other going to the load/starter side of the ON/OFF works too. I read it as the "C" post...