Trail editions generally come with a 130a alternator. You can cross-check yours by the part number.
THANKS! for this info!
So, anyone know? when our trucks are in typical driving time, how much current does it draw?
I think the only downfall for using the 31M without doing occasional "top-up" using an external charger is that the automotive charging system is typical at 14.2V.... while these deep cycle 31M really want something like 14.7V to top them up to full....