Need help understanding Mopar ignition…no spark

67Dart273 said

Back things up a bit. People are going on about Mopar and you are mentioning HEI. WHICH DO YOU HAVE AKA what are you trying to use?

And what have you done exactly? Seems like HEI?

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Take the diagram shown here and replace the coil, with a FD478 coil…I have this exact setup wired the exact same way, although I tested it with a canister coil too. I have a new GM hei module coming tomorrow…let’s see if that changes anything.