I've known for awhile that the batteries aren't getting charged while
I drive.  The ProMariner has been saving me: It charges the batteries
each night while I'm parked.

But I just measured the alternator output at idle and at 2,000 rpm:
13 volts.  My understanding is that it should be 14.2-14.4 volts.

So, is it pretty easy to replace just the regulator on the
road?  Somebody point me to a how-to?  (It's mounted on the alternator, right?)

Or should I bite the bullet and just get a whole alternator with the
integrated regulator?

I'm planning to drive some remote stretches on the way back to
California, and I don't want to get stuck.

http://twitter.com/sbwsty

Thanks.