I checked this out too. thanks for the link in the other thread, by the way. this rec. only has four wires ours has 5 to accomidate three phase charging. and I knew the one that I ordered would at least bolt on and plug in even if it didnt work.
This guy builds them in his garage and guarantees 'em. if I have trouble again I might take a closer look at them He does have on for three phase.
http://www.oregonmotorcycleparts.com/FAQ.html