Hey everyone im having a few problems wiring vtec in my eg civic i know there are 2 wires that i have to run from the ecu A4 D6

From my understanding A4 connects to the the vtec spool solenoid but where does D6 connect to ?

I have seen on rywire that i have to connect D6 to the vtec pressure switch but the D16y8 doesnt have on there is just a bolt where it would be also with the vtec pressure switch it has two wires comming out of it
so if anyone and enlighten me with this problem as its holding me back on getting this car finished

Any help would be greatly appreciated

Thanks