I gave it a shot using my volt meter and it looks like Yellow is the starter, it was the only one that showed voltage during crank and no voltage elsewhere. I'm not sure if the white is a constant 12v since the other wires showed up 12v in IG2.
I put everything back together, so i'm hoping white is a constant 12v. Knowing Honda, white tends to be 12v constant.
seems i'm alone in this thread. But I used both the key to start the engine and it works fine, I also used the push start button and it starts fine. The Yellow wire can be cut if you don't want the key to stat the car anymore. Just use the 'harness-end' to the relay.
I took out my hazard button and replaced it with the push start. I'll have to figure a way to get the hazards to be able to work again. There's not much space in the EX, without drilling large holes that have enough room to slide the button all the way in.