Does a 1990 300E have blower motor resistors?

[Jgood12006]

I have a faint-to-moderate electrical burning smell coming from the air handling system on my daughter's car. This car has automatic climate control (though the AC system has been fully discharged for probably the four years). She isn't a smoker so it isn't cigarettes. In the past with older American cars, this same symptom has been dust/dirt burning off on the blower resistors (used to changed fan speeds). The automatic temperature control seems to change speeds normally and it is of course gradual (acts like a potentiometer is used instead of a bank of resistors) so I don't think the problem is necessarily this simple but I'd like to know if this car has such resistors and where they're located. I see in my manual there are resistors for the aux fans but no mention of blower speed resistors. One more note, I noticed this smell roughly two months ago so the car is drivable but unpleasant to sit in. Last week , my daughter skidded on some ice and went over the curb backwards. No damage to the body . Had Goodyear check out the undercarriage, steering, suspension, brake lines ,etc. and put on two new tires. I bring it up because the blower's 30 amp fuse blew. I have it currently hot wired and am purchasing a proper fuse. Could the jumping the curb cause the fuse to blow or is this indicative that the blower motor is probably dying?