The wire I am unsure of is a white one that splits from the rest, beneath the alternator.
Edit: Still not sure what that wire is for or goes to, but I put everything else back together. I have a new NSA alternator and a new yellowtop battery. The car will start and idle, but it STILL looks like the alternator is not charging the battery. Using a voltmeter, the battery charge was slowly dropping from 14.2v to 13.3 over the span of about 4-5 minutes during idle.
I re-adjusted the belts several times and started the car after each time, and the battery continued to slowly drop. I can't think of anything else except that white wire, and I have no idea where it goes or what it does. I called the local Mitsubishi dealership, talked to the service guys, and they had no idea either. HELP! I haven't driven this car since I bought it 6 months ago, and I'm desparate.