Help with diagram of system setup

[agarabaghi 10+ year member]

So ive sketched out my boat install and just needed some help figuring out how to go from the engine / starter / alternator to the starter battery and isolator and 2nd battery, and then to power all the amps....

Could someone maybe help me out or possibly draw the lines for me?

Attached is the picture

http://img859.imageshack.us/img859/5420/layout01e.jpg

View attachment 26523882

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