What are these vacuum lines?

[Warren99]

Doing an engine swap, didn’t label stuff properly and now I’m trying to remember what these two vacuum lines are for.

This black line just runs all the way back to the vacuum reservoir in the bumper. I or someone else helping me labeled it with tape so it got unplugged from something but the tape isn’t readable or maybe wasn’t written on at all.

This blue line is one of the ones that are a part of the 4wd system. My truck was originally 2wd and I swapped these in a while ago. I want to say this nipple was always broken and it was never hooked up to anything but my 4wd worked fine and truck ran fine. Regardless figured I’d mention it incase someone knows exactly what it does 

[eaglescout526]

The black one looks like it’s for cruise control to the servo. 
 

The blue one should be a atmosphere vent for the vacuum to the 4wd. I think. 

[Warren99]

27 minutes ago, eaglescout526 said:

The black one looks like it’s for cruise control to the servo. 
 

The blue one should be an atmosphere vent for the vacuum to the 4wd. I think. 

Ah, yes that’s what it is thank you. I also added cruise control from some donor and never could get it to work. Not planning on trying to get it working again anytime soon seeing as I’m still trying to get this new swap road going 

[eaglescout526]

No problem!