Originally Posted by two4two

White-97-XLT, is that the pigtail for an '87 or a '97?

Danr1, the alternator is new (or reman), so I wouldn't suspect brushes or springs. Actually, when I checked the wires coming from alternator to battery I had to work the probe around inside the connector until I got it to register. Maybe it IS a problem with that connector/pigtail?

How would I check alternator output while it's still mounted to the engine? If a pigtail won't fix it I was thinking of charging the battery and starting the engine and then testing for amps coming out of the alternator. That way I wouldn't need to remove it from the engine and take it to be checked.