[mark43]

Hi everyone,

I will be installing a second battery in my Z210 this spring and have had trouble determining the gauge of wire to use. For those of you out there with two batteries installed, what is the gauge of wire that runs to your batter switch?

Thanks so much!

[DCB_MINDED]

It really depends on your application. If all you are doing is playing the radio, and starting your engine (I see you have the 5.7) then you can probably get by with 1/0. Personally I have 2/0 in my boat, but I run a 5000 watt inverter quite often. For the few extra bucks, overkill doesn't hurt here.