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Wiring diagrams for '85 MGM

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    #16
    Originally posted by matth825 View Post
    Are you going to go with a Duraspark 2 for your ignition system?
    I didn't actually mention it in this thread, but in the RR thread. I'm gonna go with a Duraspark dizzy but I'll be pairing it with a GM HEI module.
    Compared to a full duraspark system it's simpler, cheaper and just as good or even supposedly a bit better.
    No wiring harness needed (only a few wires to run), no ballast resistor to install, uses the factory coil and a spare HEI module takes less space in the glove box

    Module will need a heatsink which will be a bit of an eyesore but oh well.
    http://www.carbdford.com/tech/HEI/hei.htm
    1985 Mercury Grand Marquis LS, "Maisa"
    1995 Chevrolet Caprice Classic STW, "Sally"

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      #17
      Some great info here.
      Very helpful.
      ..

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