Wow... Thanks guys. That totally solves my mystery.

As I am in a permanent summer place, all the heater connections has been disconnected or removed when possible; And I was getting all paranoid....

Mystery solved and thanks all for your effort and time.

__________________
1992 200E
M102
102.963
AKA Silver Old Grumpy
Always hope I can freeze someone with the aircon- Just change the compressor again, Subseal leaked with a psssssssss sound.
Its the NON-3 Pointed star items on my car that cost more to repair.$%^&%%*^&