HFS-3 on BMW 535d

[KertRe]

Map sensor i understand and know what wire i have to connect to the blue wire form pin ECU. But what is the yellow AUX wire for? Where should it be connected? And green wire goes to injector - ? May i also connect it to railpressure sensor m - ?

In that case, user pin wires i just leave empty?

Sorry if my questions are a bit foolish, but i have never dealed with water/meth injection, so i want to make it clear to me, so there would be no errors if i start the installment

Best regards,
Kert