You would need to figure out what wires go to what.
Generally the yellow wire is to the starter circuit, and the red wire is battery or hot all the time. Its the green and white wire that have me stumped.
You could get a multi meter and check for power of the red and yellow wires , both with key on and off. But that's kinda like shooting arrows with a blind fold on.
My suggestion is to start pulling the knee panel off under the steering wheel and see if you can locate the the main harness coming from the ignition switch and see if any wires are tapped into it.