The “key” to the whole thing is this switch. It fit in this flattie dash with no problems, almost like it was made to be there. Okay, great, so how does it work? Yeah, I wondered that, too. The instructions have you run a wire to the brake. So to start the Jeep, you need to hit the brake and just push the start button and violi! To shut it off, hit the brake and push and hold the button for two seconds. That is wired up like the instructions. I plan on rewiring it somehow later. Trasborg didn’t like this setup because of the brake thing. But you see, to turn just the acc part on, you need to push the button but not the brake. The button tells you by flashing what it is doing. It took me a few times playing with it to get it, but it’s really easy.