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Thread: Alternator Warning Lamp Circuit Question

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  1. #11
    I am he, fear me the evil twin's Avatar
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    Quote Originally Posted by dom14 View Post
    snip...
    sense wire have connection issues or the fuse on it dies and the alternator puts out some 18+ volts.
    That kills the alternator dash warning light(assumption on my part).
    Your assumption is wrong, a sense wire fault won't blow the lamp

    When the alternator is running on all 3 phases the lamp has approx zero voltage drop which is why it goes out, 12, 14 or 18 volts doesn't matter
    Last edited by the evil twin; 10th June 2016 at 10:40 PM.
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    dom14 (10th June 2016)

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