I'm head'in out for a bit of a ride, but I have time to do the reg/rec.: 3Wh, 1Bk, 1R, 1Green & 1 grey is the odd. To verify where it goes, likely to original brown, temporary plug it in to Ebay harness to verify grey goes to brown and wire it that way to stock charging system (stator & brushes) as in either diagram above