Ken5124, I have a new chrysler style 1 wire alternator. I've checked everything twice. But after looking things over again I think it's loosing tach signal. I tried it without the msd box and it's worse. It's pointing me to my dizzy. It's an msd too and did the ohm check. It checked out good but I'm still going to swap in another. I've also swapped in a new coil with no change. Really crossing my fingers it's the dizzy. It ran crazy good the first week I had it running.