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Q: brand new alternator will not charge when engine is running on 1994 Ford Crown Victoria

the battery is good i just replaced the headlight socket and headlight switch both had burns on them
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If the alternator is not charging, check the rectifier connector at the top - make sure the plug is not melted or damaged. Check the terminals - make sure they are OK. Other than that - suspect your new alternator is....not working!

Headlight switch and socket is a relatively common deal and should be unrelated to your vehicle charging system.
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