how dose the "start engine" button work?

[240meowth]

i'm thinkin about making a push button engine start gismo for my s13, over where the cig lighter is, 'cause that thing is useless for me.  but i don't feel like paying bastards 60 bucks for 'em button, so anyone know how to work the wireing on that beauty so i can have a push button engine start?

[AceInHole]

trace to your ignition wire... and wire that the same way you'd wire in a remote start.  I'm not sure if it's supposed to be a ground connection or a hot wire connection though...