Not to risk confusing things, but I just did this on my cb750 to eliminate the starter button.
When you turn your ignition to "on" its essentially connecting the battery (red) and the ignition (black), when you push the starter, it connects the black (which is now on) to orange (which is going to your starter relay). In other words if you want it to work like a normal motorcycle and have the on switch and then a push-to-start, you just need to put the button inline so that when you push it it's connecting the black and the orange and sends the power through to the starter. Hope that helps.