1984 In A 65 / 302 Electrical Problem

Discussion in '1965 - 1973 Classic Mustangs -General/Talk-' started by blu2u, Dec 31, 2013.

  1. blu2u

    blu2u New Member

    Jan 17, 2009
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    It's a 1984 carbureted 302. Painless wiring - Pertronix in the distributor - Alternator - voltage regulator - 2.5 ballast resistor. When I turn on my turn signal, the voltage meter spikes a discharge, each time the signal blinks. Good battery, good alternator. I'm not sure how to proceed. Thanks
  2. j69302

    j69302 Active Member

    Jan 31, 2006
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    Mine does the same thing. Its just low output and voltage at idle. Rev the engine around 1200 rpms and it steadies out.

    You didn't say what kind of alternator you have. If it is a stock one then I stand by what I said.

    If you want it to go away, upgrade to a ford 3g alternator. I believe you can find them in 1 (internal regulated) and 3 wire (external regulated like stock was).

    The 3g alternators can put out about 75+ amps at idle (for a 100 amp rated one).

    You can also put a smaller alternator pulley on.. But I don't think they are easy to find as its already pretty small, and you can possibly be over speeding the alternator at high(er) RPMs

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