Ignition lock Which clamp?

Hello dear v8 municipality
I hope you can help me.
I got an alarm system for my big one I already connected to it I only lack the white cable which comes to the ignition lock and there is in the instruction that the cable to the acc accessories i.e. first position of the ignition lock 12 volts has to supply it, but I don't know what the terminal number should be, does that happen to be one of you?
that should also be the terminal for the ventilation but i find it simply net..

mfg