OK so first off let me say I just purchased a 1990 240sx as a project car and replaced the starter immediately as it was bad... It did fire up after some time of cracking the first time but soon died again... I know the ignition switch is screwed up so I was considering just going the s2000 start button route rather than getting another switch... My question is does anyone have a wiring diagram that shows how to do this? If not what wires do I need to "jump" on the back of the ignition switch to get it to fire...

Thanks in advance

 

hope this helps...this is factory but im sure you can improvise