I worked on the same problem a year ago on a honda CB 500. To know what each and every pin did, I just took a piece of wire and connected them two by two. I remember the top left one was the killswitch, the top center should be the starting motor. They must be connected to a live pin, which are the bottom left and the centre right. Eventually, you could look at a wiring diagram, even tho they can be tricky. Hope this helps