Under the hood, on top of the left fender (driver side), in a black plastic box which opens from the side.
The box is about 1 1/2in long by 3/4 in wide, 2 black wires coming out of each ends.
Open it up....there a flat metal fuse inside.

 

since my e300 d engine was replaced the blower motor hasn't worked. Perhaps regulator wasn't reinstalled properly. Is it a big project to fix.

 

HOW TO GET TO THE HEATER BLOWER MOTOR PICS

 

More detailed advise needed [and appreciated]plse...
The posts re blower motor replacement seemto contradict eachother [?]Mustthe blower motor be replaced from the engine compartment, or from under the dash? How long should it take to replace one?
There's a shop here in townthat wants to charge $600+ and claimsone has to remove just about the entire dash [89 300CE]!?Thanks :-}