Replacing original fuse panel

[Blue197320]

i really like that set-up. sounds like its pretty fool proof. from the way you described it, seems like you have a deep cycle and a starting battery. just turn the main switch on and starting battery only cranks motor and accessories are driven by the deep cycle?
in your second pic what is the little red cap to the left of the switch for?? i see on the blue sea website what it is but im wondering what your using it for.

[McGillicuddy]

Blue, Your interpretation is correct - starter and accessories draw only from their respective dedicated battery but share the charging function. I'm pretty sold on the system. The red thing is a 60A fuse protecting the cable that connects to the fuse block. I have one fuse on each battery, and the one at the switch. I think USCG requires a fuse within 6' of each battery and its switch. The one on the switch was suggested by Blue Sea. Probably overkill, but after reading the Calder bible, I'd rather smoke a fuse than burn a wire.