Turns out I'm an eeediot - I finally figured out that I had unplugged the fuse box-to-engine compartment wiring harness, and that I might have to plug it back in for things to, like, work and stuff. So I got the fog lights to work but blew the inline fuse while trying to find somewhere to attach the ground. Saw some nice sparking action while poking around inside the engine compartment with the ground wire while the fog lights were turned on. Maybe that wasn't such a good idea...
