I've been searching through past threads and it seems like a lot of people have had issues with alternators. I replaced a seized alternator a little over a month ago with a new one from NAPA. A week and a half later, battery light comes on. Autozone test unit points to the voltage regulator. Skeptical of that, because it was new, I take it to my regular shop. They say the same thing. So I take it out and get it replaced at NAPA under warranty. This one works fine for 2 weeks, then same thing - battery light comes on, diagnosis is a failed voltage regulator. It's only putting out between 10-12 volts while running. Is it possible that I've got 2 bad NEW alternators in a row from NAPA? What else could be causing this?