1985 (CA) 300 TD wagon - Last year replaced compressor, drier, and 1 hose ("cold side"). Ac was fine except for every now and then (pushbutton "up" arrow only dash venting) would stop blowing - all other buttons worked well. One day - blower works fine - no cold air. Checked fuse - ok. Checked klima relay - looked okay - did not open it - smelled it - had an "electrical smell". Good or bad? help. Like I said - this "no cold air" just happened all at once - no ("not as cold air", then progressively worse) just all of a sudden - no cold air - blower still works - Also aux fan does not come on.