I've definitely seen this on a post with a couple of underwhelming replies (dismantle unnecessary stuff, don't get it) I know the description says yellow to lights, black to kill switch, and big one to spark plug. That's a lot of jumps from the old configuration so I just want to make sure I have this right before I hop to it today...
Yellow to: green wires (stop light), grey wire (tail light), and blue/black (horn)
Black to: black (kill switch)
Ignition coil to: spark plug
The last two are obvious but I would think the yellow powers the horn too? Also, I wouldn't need to worry about the green/black to brown on the ignition coil b/c it is grounded to the stator plate?