Hi Jerome,
I saw your previous article and was going to post you as well.
My light has stopped coming on recently, about the same time i noticed that my alternator doesn't seem to be charging, i haven't as yet checked the charging circuit but will do so on the weekend, after running the headlight for a while the bike stops at the lights etc., a classic sign of a low battery, with the headlight off the bike will not cut out, turn the light back on, cuts out at low revs.
I have only just put the assimilator light and the apparent lack of charge together in my head and will investigate further, i'm sure there is a connection with that or as the N.O.C. article said it could be the rectifier.
Regards Mike.