I just asked the question in case Rick remembered it. It will take less time to try it and switch the wires if I have to, than to try and weasel that info out of MSD. The *tech* I talked to there last was typing my distributor symptoms into a computer and reading off the computer for things to look for. That's some great tech service. I seriously doubt he ever touched a distributor, or even knows what it does, let alone try to tell me how to modify it to other than how the factory built it.