2nd Battery Help

dgs119

Seaman Apprentice
Joined
Aug 10, 2008
Messages
39
I want to add a 2nd batter to my boat. How hard is it to do this? It is a
2007 Four Winns I/O H190. Diagrams and pictures would be great if you have any or links on how to do this. Or is it worth having a boat mechanic do this?

Thanks,
 
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