Hey thanks for the offer John! I actually do have a spare PGM available to swap - I've just been trying to make sure first I wouldn't fry it in doing a test (and this thing is so intermittent I don't think I would know if it made the difference right away, unless maybe i started from a miss baseline). Andy, I did check the VR using the Electrex guide....it said there should be "greater than 13.5 V at 2500 rpm" and to then take it to 5000RPM whereupon it should read 14.8 or less. Well, at 2500 I was getting 14.9, which is above 13.5 but is it too far above? Guide did not give an upper range for 2500RPM. When I took it to 5000RPM, it registered 14.2 - 14.5v, which seems normal. So if the 14.9 was not too high at 2500 RPM, then it meets the criteria for 'charging sysyem ok" - this is an Electrex VR I have in the bike, not stocker, BTW. So is the 14.9 at 2500 RPM too high?

I think I may first try replacing the female connectors to the coil, on the theory that there is something hinkey there that can cause an otherwise sound coil to misfire some of the time (as when it misfires, is taken out briefly, and then is reconnected and works!). Maybe fanciful on my part, but it costs less than a new wiring harness to try. Andy, please hold on to that harness though, and ANY info you guys can send my way is very appreciated.
Thanks,
Jim
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-Jim
'93 MC21