wiring Question

[1979jimmy350]

Im looking to set up a circut for a starter in a Newer Gm, they don't use a start wire like the older ones, the computer senses the loss of voltage to the assories and cranks the engine, how can i wire a switch to bypass the computer? So the circut woudl need to engage a switch when there is voltage loss how would i go about that?

 

[1979jimmy350]

ttt

 

[bear76]

Push button starter?

 

[1979jimmy350]

it has a push button now but im trying to get rid of that so the car is less of a hack wiring job