I have read through some of the posts about the AC problems with the w124 chassis. I just had a question regarding mine. When the climate control is engaged in any mode (Full AC, EC, Defroster) The blower motor does not turn on and the AC compressor does not engage. I have checked the fusible link and cleaned off the corrosion. Are there any relays or other fuses I need to check? Should I add freon and see if the AC compressor engages? Is there an AC relay? Any help is appreciated. Thanks in advance.