Ignition solenoid wiring

[Not_your_grandpas_marquis]

I have almost all my wiring for my Terminator X done, and now one of the last things I need to do is figure out where to wire the Red/Lt. Blue wire thats runs from the ignition solenoid, then to the NSS, and then supposed to go to the igniton switch.

Can anyone tell me what connector the Red/Lt. Blue wire running from the top post of the ignition solenoid runs to or where a good place to tap in for a 12v source ONLY when the key is turned to the cranking position.

Thanks all in advance!

[massacre]

Usually it goes from the ignition switch white/pink, to the NSS, then red/blue to the solenoid. You can test this with a meter.
Not super familiar with your build, are you running an automatic or manual trans?

Either clutch pedal switch for a manual or MLPS or range sensor for an auto is usually where the circuit switches colors.

[Not_your_grandpas_marquis]

Thank you! Ill check that out tomorrow after work and trace it to see where it takes me after the firewall. My car is a 89 GM, im just using a rebuilt AOD for the trans.