Jabberjaw

mine started the same way, both batteries, went about 8 months before it wouldn't start at all; something about that aux battery when it goes, it damages the primary battery.

I have a good AGM charger with conditioning cycles, both batteries crapped and would not charge
 
I figured. Honestly, I feel like that had a good run. Hell, my stock tires made it to 60K.

If I delete the aux battery, should I do the speedo and mpg gauge delete at the same time so I can safely descend hills?

Screw it, I’ll follow the Jeep engineers’ lead and replace both batteries. They know a bit more than me.
 
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