I have a 1990 Mazda Miata with 112000 miles on it. When I run the AC after a while the lower vents around the blower motor fill up with water and dumps onto the floor when I make turns. I think the drain might be clogged but can not locate it visually or in my Haynes manual. Does this car have a drain? If so where?
The drain hose comes off the evaporator right near the passengers left foot near the firewall/trans tunnel. It comes off the large black bow and goes into the floor. Try taking it off the black box and fishing some course wires through it to see if anything is blocking it.