scirocco16v88@hotmail.com writes: << What are the signs of an ailing alternator? >> Not really relatd to your problem, but how about after isolating the battery from all other circuits, getting a 6V reading from the battery to the alternator? Idiot light indicated normal operation when running. Gave me an excuse to upgrade from the 35A to a 90A alternator. Carl 77rocco 89fox