[Roadtrip]

Repeat after me . . . . .

"From now on whenever I work on my engine or electrical system, I will disconnect the negative battery cable unless I am testing something."

That said, check:

1. The 3 prong connector pushed all the way into the alternator.
2. The 3 prong connector pushed all the way into the voltage regulator, front left edge of engine compartment.
3. Large wire tightly attached to large stud on back of alternator.
4. Battery cables clean and tight on connections.
5. Battery ground cable clean and tight on body connection.
6. Check fusebox (left driver's knee under dash) for blown fuses.
7. Check main battery cable clean and tight on the starter motor.

Did you take the alternator completely off? I wouldn't think so if you just did a belt change. Did you see or hear any sparks . . . . like you inadvertantly touched the red cable to a ground source?