Like this? This is the button from a S2000 in my miata. They way I had it installed was so that you would still have to turn the key to the on position and then push the button. It kinda works as security people couldn't start the car even thou the button was red, lit, and said engine start on it. I have thought about it for the rex but don't really see a nice location and I don't know if it would really fit in. There was something about that classic little rodster of mine which felt right being started up that way. Damn I miss that car.