Where's my vacuum line?
 

I'm installing my boost gauge, i just need to find the vacuum line .

https://www.ford-trucks.com/user_gal...196143.520.390

See the black hose with the "T" with the brass fitting and the small line coming out of it? That is the line to use. For your information, the line is pressure not vacuum. :-D

Would you like to remove the AIH at the same time? If you do, you can plug it up with a plug that is ported for the boost gauge.