Urgent Exciter wire or bad alternator - LS1LT1 Forum : LT1, LS1, Camaro, Firebird, Trans Am, Engine Tech Forums

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post #1 of 3 (permalink) Old 09-26-2016, 12:11 PM Thread Starter
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Exciter wire or bad alternator

Got a 00 trans am. Alternator went bad on me at 115k. Ordered a new one online and installed and still not charging. I guess it is possible to have a bad new alternator.. I know it is easy to break the exciter wire since it is difficult getting the alterator out but it dont look broke. is there a way to test this before pulling the alt back out and returning it?

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post #2 of 3 (permalink) Old 09-26-2016, 08:54 PM
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The exciter wire if unbroken will have battery voltage on it with key turned on.
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post #3 of 3 (permalink) Old 10-18-2016, 01:56 PM
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Above is correct.... or you could take a jumper wire from your posative terminal. to that post on the alternator and see if it starts charging... will probably charge really high as thats supposed to have a reisitor inline, but that would be the way to rule it out.. ..

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