Vacuum hose at left rear near AC lines and pump for shocks

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bighank

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Saw a vacuum line hanging down underneath at left rear at very back of the Montana. It is a single line going forward but splits to 2 lines which are about 5" long. Line is about 5/16" or so and is deteriorated. Is raining cats and dogs here so I didn't jack up the van or crawl under to determine where the line came from or why it is split into a T near the back. It is near what I think is the pump for the inflatable shocks. When I changed the shocks about 2 years ago I remember hard plastic lines going to each of them not rubber hoses.
Just pushed the dangling hoses up and over the electrical wires which are running along with the rubber hose.

What is the line for and where does it connect in the back and further forward?
 
It goes to two fittings on the air pump and motor for the air shocks

Jacked up the rear and found that the small vacuum like hoses go to two fittings on the motor and pump which inflates the air shocks.
These hoses are NOT the ones going to the shocks as there is a plastic hard line from the pump which goes to the shocks.
The line disappears into a grommet like fitting in the frame rail about 2 feet or so from the rear of the van. Wonder if it might be a line going up to the fitting inside the left rear of the van which can be used to inflate things. Haven't used that feature in years.
Will splice some vacuum hose into the line and reconnect it to the fittings on the motor and actual pump.
 
could be I have that function on my van to inflate things but as you never use it. Test it out and see.
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