like the op says, he has the parts already.
jeff I'm sorry. why don't you complain when I make a mistake.
you have a 50a 2 phase rectifier. dillon gave up on me. and I'm
not explaining things well enough. once the one lighting stator is
attached to the ac regulator. I need to tell you what happens in
the rectifier. sorry again dude. these are the outputs and imputs
at each terminal. this rectifier has 2 ac terminals. 2 phase. you only
want to rectify one ac phase so one 2 of the ac imputs is n/c
at this point you want to set the trail tec to 28vac. If it does not
go this high no biggie. I'll get to it. the output between ground and
the + terminal is now 14v dc. the cap gets attached bettween + and
frame ground. the minus rectifier terminal is -14v regulated minus.
the rectifier - is not used. the bike is already wired with the frame as
ground you are done. frame is - and + is 14v. if you have a blaster
type or if the trail tech voltage does not go that high then you need
to float ground. + is 7v and - is -7v. you float ground by running the
ground that floats at -7v. and isolating the bulbs from the frame.