2003 GW 257 Advance Upgrades

Joined
Jun 28, 2018
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Bradenton, FL
#1
We recently made the decision to Repower the 257 from the Single Yamaha F225 to Twin Yamaha F150’s

Consequently, we are taking the two battery bank and adding a third battery.
2 cranking batteries and 1 deep cycle for house electronics.

In addition to all of that, we are rewiring components and accessories.
This task includes moving main battery switches and main circuit breakers, organizing the helm, updating dash panels, and adding a NMEA 0183 and 2000 hub.

This will be my progress thread for anyone that might be interested or looking to do something similar.

Happy to answer any questions!


See Photos Here
 

CapeWill

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Mar 24, 2014
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#2
Hi Bfrench,
I am repowering my boat this fall- curious as to the ballpark cost? I have an 02 Advance 247, going with 150s or 175s.
Also curious as to how you like the upgrade to 3 batteries. I am running two but won’t leave much on unless the motors are on.
Thanks
Will