Well, I'm tracking the problem piece by piece. I definitely have good ground to the regulator. However, still no power to the brown wire when the ignition is on, AND no power to the blue and black/white stripe wire while the car is running. I am planning on pulling the alternator out again and retesting. Also, I am going to pull the gauges back out to get to the ignition to see what is going on with the brown wire.

The brown wire on my car doesn't actually go to the fuse block. There is an in-line fuse that connects the brown/white stripe wire with the brown wire. I just have no idea why that brown wire isn't getting power. It's really starting to p*** me off!