I can do one half that good.
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ProSport says definitely 'NOT' in their manual. However, that is mostly for reasons of liability and not for any functional reason. I wouldn't have any issue with extending the wires to a smaller degree if you used the identical guage. But for a longer extension to the opposite side of the boat, personally I would re-locate the charger....because I do not know at what point the added resistance would influence the profiling of the dual batteries. If you have cut-in an AC inlet, I wouldn't hesitate to extend the 14/3 AC wire to anywhere in a towboat.
David
Here's a link to mine, same boat as yours. I run three batteries and put the third one under the port bow seat. Everything is mounted forward of the fresh air bulkhead in order to maximize storage space in the cubby.
https://forum.moomba.com/showthread....tereo+makeover
http://i250.photobucket.com/albums/g.../IMG_25922.jpg
I am trying eliminate that whole factory amp board on the port bow seat back. here is what i have now and it is a mess IMO
http://i1130.photobucket.com/albums/...psdc974c00.jpg
David,
I prefer the charger on the front wall because you never have to mess with it, and if you do, it's four screws and a couple of quick disconnects, but nothing to adjust.
Then I prefer the amplifiers lined up against the port hull. Easier to tune or access for diagnostics and service.
Quality heavy gauge cable is very expensive for that amount of current without loss and for that distance. Also, you wouldn't want to double the length of the starter/alternator feed without stepping up the gauge. So in any scenario applied to this boat, I just don't feel good about splitting up the batteries.
David