1993 Plymouth Acclaim Broken Vacuum Line

I have recently removed the evaporator core from my plymouth. During removal it seems as though I broke 1 vacuum line. The vacuum line runs through the fire wall below the 2 heater core cooling hoses. I have no idea were this line is located under the hood of the car, and I don't know were it connects inside the care. I really need to know how to repair this please help.

This is a picture of the vacuum line im talking about. one thing im also wondering is. Does this hose have a place within the unit that attaches to the main ac dash control? I have 1 hose missing in the unit it might seem? However there is 1 broken black vacuum line on it.

and before I forget here is a picture of the main unit. If the empty slot is for 1 house, were does it connect? basiclly I want to know how to hookup each line and to were.