Emergency start button??????

[richard5vgy]

Hey im havin some trouble i have a 74 260z its an early one and i have an emergency start button that i would like to hook up and ive tried finding a wiring diagram that shows where the wires are coming and going to to properly hook this button up im starting to wonder if i even want to hook it and what exactly is the buttons function does it route the power in the car to the starter im a little lost up plz help