It doesn't sound like any of your problems are necessarily related. Most seem to have happened at different times.
Weak or failing alternators can kill a good battery, so that sounds like a normal side-effect to me as well. Fix the alt problem, you won't eat batteries for lunch.
We need to start taking your problems down one at a time, starting with what Lakeville suggested. Check for exposed/loose wiring or broken bulbs.
Just a side note here, it would take a monstrous short to wipe out an alternator. I don't buy it, and we have alot of experience with alternator problems here. Bonnevilles are notorious for eating them. My best advice under normal circumstances is to buy an alternator from www.mralternator.com
and a new battery (spend for a good one) at the same time. I haven't had any problems since doing this, and we have at least a dozen of these running here.
Napa and Autozone alternators are notorious for being one-year units for us. 3800'* run hot, and alternators don't like it. Typical failures are the rear bearing, then that heat wipes out the rest of the unit.
So let'* start tackling your problems one at a time, starting with your fog lights. Go to Wal-Mart, and buy the cyber-white navigators. If you click on my signature pic, and go to my website, you'll find a pic of what they look like. They're very inexpensive, but a perfect quality match for our cars. Wtih your NW weather (I'm in Oregon, so I know
you need these and they could be a problem for you).
Where in Washington? Can you add that to your profile, and put 94 SLE in your signature? It'll help us to help you in future topics. We also have a couple good members that might be in your area for a little personal help.