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  1. Vintage Mustang Forum
    Welp, long story short . . . 66 mustang • HEI is fed currently from green/red wire from ign. switch (pink resister wire removed already and replaced with standard wire) - is this cool for keyed 12v source or could i use another for the HEI... Secondly • 3g alt reguires 12v to green/red wire...