Okay here goes:
If you look on the boost controller solenoid :
"COM" port will connect to the waste gate nipple
"NO" port will connect to the charge side/turbo side nipple.
"NC port should be vented to air.
Note:
If you are using a aftermarket waste gate, then the NC port will connect to the wastegate and the NO port vents to air
(you will need to move the barbed nipple to the correct port.)
Then you have the boost sensor itself : the elctrical plug will connect to the harness and then it will connect to a vacumn port from the manifold. YOu can "T" off the vacum going to the stock boost sensor.
Do not use the vacum feeding to the fuel pressure regulator.
Good luck.
I have diagram i f you need it.
Moe.