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Re: GM HEI external coil primary pinout?
Posted to Technical Discussion Forum on 12/8/2008

Your best bet is to go to a junk yard and clip the connectors and some wire off an oe harness for that coil. You will note that 2 connectors on that coil are redundant. One pair could be power supply and a tach terminal and the other pair could go to module a... Login to read more.