Go to page 8 on this. http://www.msdignition.com/pdf/7 series/7230_7al3.pdf Where the shift light is connected you will wire that the positive side of a 12vdc relay coil. You need to wire your electric shifter to the NC or NO side of the relay depending on what shifter you are using and supply the common side of the relay with a fused + 12vdc source.
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