Please excuse this poor diagram but is this is the appropriate way to ground my dual battery system?
Engine grounded to its starter battery, house load grounded to their own house battery, and the 2 batteries are grounded to each other with a 4 guage wire?
Thanks
Engine grounded to its starter battery, house load grounded to their own house battery, and the 2 batteries are grounded to each other with a 4 guage wire?

Thanks