Charging battery problem
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New alternator not charging battery
I have 97 f150 with 5.4. When I change alternators I have to be careful when I pull the 3 wire plug from the back of the old alternator, the green wire specifically. It will actually pull up to the point when you put it on the new alternator it wont get a connection. Therefore not charge the battery. All I do is to look into the business end of the plug and you'll see if any of the 3 terminals have been pulled back. If so just push the affected wire back where its close to the other 2. And carefully plug into the new alternator. Maybe this has helped someone it took me 10 days of chasing a ghost before i found the problem.