Climate Control No Vacuum

I have the Sport Edition and lost the vacuum for the climate control. I tried tracing the vacuum lines but got lost. My truck has the round vacuum reservoir with one line going to a T, from there it goes to a port on the drivers side and passengers side. I originally looked at the one on the driver's side. It had a rubber connector with a very small hard black plastic tube coming out and bent 90 degree with green heat shrink at the bend. When I went to remove it, it pretty much disintegrated. It went straight to the reservoir unless I missed something. I put a one piece tube to replace it. The vacuum line comes out of the firewall on the passenger side and goes into the fender well with no idea where it comes out. The diagram under the hood doesn't match what I see. Very confused and would like