Re: How do you get at the fog lights?
OK, did a little research, and for those who don't know...
The type of fog light used in the Grand Cherokee is a PSX24W. Apparently the fed.gov recently fiddled with lighting regulations, and now fog lights have been pretty well neutered over what they have been. This PSX24W is unavailable in the market except from the parts counter at the dealer (for $50), and is still basically cosmetic- won't put out enough light to really make much of a difference.
If you like the idea of functional foglights, you're going to have to start thinking about an aftermarket replacement kit, likely one that uses the original wiring to trip a relay, but powers the lights themselves directly from the battery- the OEM wiring only provides 24W to drive these things, which isn't that much.
Looks like for now I'll have the dealer replace the bulb under warranty, but I'll keep an eye out for an easy swap kit that will look stock when it's done.