Mystery Hose behind glovebox.. 1982 300D

[Mr Goodfahrt]

1982 300D turbo, 200K+(?)

This is my first post as I am a new member but would like to thank everyone for such great info. I am new to Mercedes also, but have become a passionate admirere of these fine old ladies!

QUESTION... while chasing down some vacuum leaks, I removed my glove compartment and found two 1/2in hoses facing each other that ended in mid air with a 6 or 8 inch gap. They appeared to have been connected at one time and there was some rotted material all over the inside of the the under-dash area. One was attached to the temperature sensor under the dashboard, and the other looked like it was heading towards the blower but I couldn't be sure. Any ideas if this hose is important and what it did? Thanks




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1982 300D Turbo 123 Cream