As long as the existing wire is at least an 8AWG wire.

My engine bay without the motor. wire upgrade will be easy . Fresh 540 to go back in this spring. Looking at the wiring diagram, its the orange wire fron the alt to the starter that i need to increase .

I've been running DB's 105 amp. Definitely upgrade charge wire and connectors. They have awesome affordable products!

Post a pic of your checkmate...can't tell too much from the avatar.

2010 onieda lake n.y. pictures. looking at the wire diagram, I know now what wires to upgrade. Thanks for the input.

I used to run a 65 amp on my Liberator and two batteries with no problems. Keep in mind most alternators make their rated output at 2000 rpms. If you idle a lot you will not be making full output and may want to go to a 90 or 105, but if a 65 will get the job done their is no advantage to going oversized.

I dont idle alot, but this year with fuel price$ up again, I may sit more and relax than up/down the lake.

Make sure you have a wide enough belt- if you really up the amperage you need a wider belt.

I have 2-pc2150's a full nav system (with a 4KW radar) and run a 165 AMP alternator off a serpentine belt.

Balmar is a great resource for marine alternators and information.


Uncle Dave

1/2" belt. I ordered a 65 amp. Thanks for all your inpiut.

balmar reccomends 110 amp max.

http://www.balmar.net/2011-Balmar-Product-Guide.pdf

UD