yep. my boss and co-worker explained it to me yesterday after i made that post. the negative post on a battery isnt ground at all its just the return path. I should have known better. ah well i guess floating ground doesnt have anything to do with the charging system stability. I guess then i go back to my original point of the goldwing having 380w.
(EDIT: i stand corrected. I googled gl1800 charging capacity and came up with this
GL1800 charging capacity - GL1800Riders )