I know this isn't the diesel forum, but this seems unrelated to the fact that my car runs on an OM606.910. Go to last paragraph for what I find really puzzling.

So one day I was working on my car in the engine compartment. I was working on a glow plug that required only removal of the crossover pipe and the plug for the 4-pin coolant temperature sensor that is kind of difficult to attach in the correct position.

Anyway, when I got tired I went back inside and passed out. I stupidly left the hood up and it rained that night. When I got everything put back together the blower motor stopped working and my windshield wiper stopped if I turned on my left turn signal. The ovp blew it's fuse too, but that was an easy fix.

I checked that renegade blower fuse with my voltmeter and I'm not completely sure (it was a while ago when I did the test and my friend is borrowing my voltmeter) but I think it was getting something near battery voltage. No cracks whatsoever. I also removed it to clean the connection points to no avail. I did have the no blower problem once before, and that time it was the fuse. The difference here is that I'm hearing a squeaking noise from the blower area as if the motor is trying to move. That makes sense to me since the shop manual says the symptom could be caused by a warped plastic blower housing that seems possible from the rain. Is this easy to reshape manually, or does it need replacement? I'm about to start pulling parts out to get to my blower unless there is an easier remedy I haven't thought of.

What puzzles me though, is how the combo switch behind the steering wheel could go bad from all this. Using this thread I fixed a broken solder joint on an other combination switch behind the fuse box that has something to do with the wiper, defroster, and turn signals, but that did nothing apparently. I guess the broken solder joint was still touching the circuit. So, is there anything else I should check seeing as getting at the blower motor and combo switch both seem to entail a significant amount of work?