Can anibody help me with coolant leak?

[vladimír modla]

I have a 1989 190e 2.0 carburator and behind magnetic clutch on radiator fan is conector for hose and i have no idea what it can be for but it is leaking

 

[DREAMER NO2]

So you know the location ,,,we dont, post a picture of your set up it will help us understand, not many of us have seen a 2L 190EE