Intermittent charging Sometimes it charges and sometimes it doesn't. The alternator passed bench tests at Autozone, I replaced the pigtail connector and checked fusible bus link and fired a blank. The charging indicator light doesn't seem to match the status of the alternator. The light is sometimes on when there is 14.3V output from the alternator and sometimes it is off when there is only 10V reading. What could be the problem?

SOURCE: 1984 ford f 150 not charging

Ok lets see
The charge ligth or sistem is operating properly ligth, or not
1) check for pwer, in the Alternator positive terminal, shoul be power all time ingnition Off or On dont matter
2) Check for ingnition controled power in the another wires that going to the other connector in the alternator, beside the + batery

If do you find power in both test you should take the alternator to the autoparts store to be cheked, but if any of those test fail, check you wiring harness, the

SOURCE: Charging Light On After Replacing Alternator/Battery1999Windstar

Hi, I can't tell you exactly what is wrong because there is too much involved at this point, what with 2 shops working with it, but I can give you some advise on what else to check. On the alternators and the wiring that supports them a small volt charge is taken off one of the slip rings, where the brushes ride, for the purpose of turning out the light. As I remember, this is a yellow wire that runs back to the dash.

To the alternator, it would be one of the wires that plug into the side of the alternator case.
jetski

SOURCE: 97 FORD F350 SUPER DUTY ATERNATOR LIGHT ON NOT

The wires are probably broken internally, replace

SOURCE: battery light is on after alternator change

have u ck the new one,,,it could have a bad stater in it,,

SOURCE: i own a 2006 3.0 v6 ford escape this past few

How is the alternator belt? There might be a loose connection at the battery, alternator, ground cable. Without a lot of detail, there are 1 way diodes in alternators, when the diodes go bad, the current will go the way it's not to, when this happens, it powers the light in the dash. Try wiggling the connectors, maybe that would make the light come on, if there is a bad connection.

Testimonial: "interesting suggestions somehow those folks at ford didn't bother to tell me. But sir any suggestions where i can bring my escape?"