Vacuum hose from Turbo

[nebular]

Hello. I have a 2005 Turbo lite and last winter the 1/2" vacuum hose coming out of the turbo and up to the big splitter shattered. Or rather the plastic couplings at both ends shattered (it was -45C at the time here in the Yukon and my extension cord for the block and battery heater also shattered. It was cold.) So I pulled the hose out and covered the holes as best I could with Tuck tape and so now I'm getting around to fixing it.

So the abstract vacuum line diagram is a bit too abstract for me to figure out what this line is actually for, so that's my first question.

And what are the plastic connectors called and where can I get them? Or even better, are there any 3d printer designs for them so I could just print them myself?

[MJKnight]

How does it run?
Parts like that seem illusive...
I replaced my intake gaskets
Ran great for a while.. now at wide open
It has a miss..like the turbo is in and out..
.I'm thinking I have a vacuum
Leak somewhere..