Battery wiring series vs. parallel

[michaeljr5]

I'll right, I'll eat crow here...it was me who had it ass-backwardslol

Michael, you were just saying how you wanted more amps to the winch, and looked into an alternator to do it...running the batteries in parallel will help this.

I understand that. But at $136 a battery, I want to protect them from draining each other. I figured the isolator would work. I just wanted a bigger/stronger alternator if possible. It would be easier to install than all this wiring and battery thing. :eek: If I do use dual batteries, it's gonna be a lot of work to get the second one into the truck.