a/c vacuum lines
 

Hey guys i got a problem, maybe someone can help me out... i have 89 mustang gt 5.0. well the a/c is out, and the person i bought in from said the venys were disconnected. Iwas wondering if anyone knew how or where they can be disconnected and what it takes to put them back in action. Also i have a yello vacuum line coming form the control panel disconnected i do not know where it goes, but when i switch the control panel to max a/c the suction begins and wheni switch it vent it really sucks hard if anyone can give me some advice as what to do ve much appreciated. thanks