Under such circumstanaces, the battery should be good. The alternator charging might be a problem though.
When headlights dims and the charge indicator shows, the alternator is not charging at that instance. The alternator assy could be good but the carbon brushes are running out and intermittently not charging.
During the alternator test at Autozone, did the charge indicator light show then?
Another item to check would be the alternator wire connectors. It could be loose or contaminated causing intermittent non charging.
Wednesday, January 6th, 2010 AT 7:22 AM