HaYN BENZ:I REMOVED THE DECRITIVE TRAY FROM UNDER THE PASS. AIR BAG AND COULD NOT FIND ANY VAC. LINES,CONTROLS OR ANYTHING ELSE. AT FIRST I COULD NOT GET ANY HEAT BUT NOW HEAT ONLY COMES OUT IN DEFROST MODE,LESS FROM DASH. APROX.75% OF AIR COMES FROM DEF. AND 25% FROM DASH. A/C IS THE SAME.