My 92 300 4matic has no blower motor power, I found power at the back of the controls in dash, and 2 blue fuses near fuse box are ok and do have power, but no power at the motor (red and blue wires). Also, there is a loom of 3 wires (red,black,yellow coming out from under the blower and they have no power or ground either.
Advice is much needed as this car is my daily and right now it is all apart!
Thanks, Michael

 

Problem solved. Although the 30 amp fuse "looked" good, it was bad, I replaced it with a 30amp fuseable link I had from a domestic car, and it works.
http://