Help! I have a 1991 300D that keeps blowing the A/C-Heater blower motor fuse. The odd thing is that the fuse that keeps blowing is a 25amp and located in the "H" block in the fuse panel. This fuse also controls the rear windows. The fuse blows at different times, sometimes while I am driving, and now immediately when I turn on the ignition. It blows even when the ccu is in the off position. I disconnected the rear window switches and the fuse still blows. My fuse box says nothing about the "H" fuse controlling the blower motor. I can go days, months with no problem then all of a sudden it starts blowing the fuse. My blower motor makes no unusual noises. It acts like there is a dead short somewhere as the fuse pops immediately when the ignition is turned to the on position. Any help will be greatly appreciated.