StephenG wrote:It seems like our alternators are only like 60 amp, but I cant remember where I read that. Have you considered adding a capacitor to your system? Even 400 watts is only about 30 amps. I would wager your alternator is might not be functioning properly/optimally.
I'm only pushing 350 watts myself, but have never had any issues, even with headlights, fogs and AC running.
The alt is an Auto Zone deal. Went out on me last winter and was stranded in a bad part of town.

AZ was the only place that had them in stock. You may be right. I'm gonna get out the multimeter today and do some tests. Thanks for the input. I will report back on what I find.
BTW: Now that I remember, when I did the upper rad hose, I got some coolant on the alternator. The batt light on the dash lit up for a moment or two, then went away. This was 2 months ago. So my alty may be on its last legs.
Im waiting for the YJ to open, then Im grabbing a 110 Quest alt for when my stocker gives up.
Thanks!!