Hello, John
I looked over the diagrams in the eBahn manual (
http://www.bentleypublishers.com/isbn/9780837612676/index.html) and I'm not sure if I see an obvious place where the leak would be originating.
It MIGHT help if we knew what system you have. Do you have manual controls, or Climatronic (sounds to me like manual)?
One suspect I see is the "evaporator water drain guide," which is in the passenger compartment, and is listed in a line drawing detailing interior AC components. According to the instructions, to remove it, you would need to remove the instrument panel and instrument panel crossmember from the car. There is also an evaporator water drain valve, which my information suggests is accessible from under the car.
Rick W
Bentley Publishers