Hi,

The blower motor regulator is located under the blower motor. As for the fuse, I've seen it available at most online parts shops, or you can go to the dealer. They're like a whopping $2, can't go wrong if its questionable. If you already have it apart down to the blower motor, consider replacing it if it's original. They are known to start squealing and groaning around this age. I need to perform this operation soon myself.

Hope this helps.

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Streetside: 1987 Mercedes 300E Petrol Blue/Green
2014 Ford Mustang Grabber Blue
1999 Ford Ranger Green

Dockside: 1968 Eltro 17
1985 Silverton 34C