I want to switch a low amp circuit (not the starter motor) that would disable the starter function. Does anybody know where, and what color wire would do this?

I want to install a momentary on switch requiring you to press it to enable the starting function. This way you can't forget to disable the car when you park. (You have to press the swith to crank the engine over)

I prefer not to go the relay route. On older cars we could just disable the starter solenoid which didn't draw much current.

(I know about the fuel pump kill switch)

Thks in advance