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Well, if the alternator is on any type of vehicle that has been made within the last 100 years, it will be the 100 amp alternator. There is no such thing as a 1900 amp alternator for a car. The highest I have seen is about 150 amps, and that is a heavy-duty truck alternator.

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Q: How do you tell what alternator you have whether it is 100 amps or 1900 amps?
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