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Lv 6
? asked in Cars & TransportationCar MakesFord · 10 years ago

69 mustang 351 w two wires on back of tack where do they go?

2 Answers

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  • nyninchdick
    Lv 6
    10 years ago
    Favorite Answer

    Red wire (or white) to the hot side of the coil, black to ground.

  • ClassicMustang
    Lv 7
    10 years ago

    It depends, some stock tachs were wired in series with the coil wire and aftermarkets were usually in parallel, one wire to ground and one to the coil..

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