Electrical Using clutch safety switch to engage 2 step

Which wire is hot when clutch pedal is depressed??
I simply don’t understand wiring schematics but need yellow/white trigger wire from HI-6S to receive 12v to engage stage feature allegedly.... which wire is 12v when pedal to floor and 0v when released?
I know is probably stupid question but it’s easier to ask than to stab and test... which I’d probably also mess up... and that’s probably not easiest way either...
thank you guys!! And ladies who are smarter than I.... not hard to be

oh ok, luckily I have a brother who can figure how to get power to said wire with a relay when 12v goes away (or whatever you do) but I thought it worked differently...I guess I thought 5 speed folk usually use the NSS to activate a 2 step so I thought probably just tapping into a wire.. again I’m no good at wiring.. thank you