Vacuum lines there connections and the HVAC controller and its connections
with were these are in the Dakota
These pictures cover the 1996 to 2000 2-nd gen Dakotas A/C or the HVAC system that operated
by vacuum after 2000 the vacuum lines were replaced with electric servos and copper wires.
The way to tell is if the controller is vertical its vacuum if mounted in the dash horizontal its electric.
The electric usually look like this
These pictures are very large and may take some time loading
Links to my Dodge Forum threads on A/C fixes click Here
If you want me to add more info send me a suggestion click here