So I have 2 vacuum lines that are unhooked, one of which has been cut. It's a 1991 3.9, 2WD Dakota. Just hoping this looks familiar to someone. I'm in the process of tracking down a rough idle. Thanks dudes!
Anyone know where these lines should go? The one on the right has been cut for reasons I don't understand

 

How does the vacuum plumbing match the diagram under the hood (on my 1988, it's on the bottom side of the hood)?

I'd start there and trace it out, since exactly how everything's normally plumbed will vary from year to year, and even from where it was originally sold.

RwP