Right, you'll see it behind that "front" firewall, it's in this little plastic box, looks like a small plastic coffin or something. Over in front of the fuse box and brake master cylinder, in that area.
If you're familiar with MB Diesels, it's the same type of fuse MB uses in the glow plug relays.

The blower motor itself is on the bottom side of the dash on the passengers side, you need to drop that under dash panel down to get to the blower motor, and that regulator is in that same area. Not a bad thing to work on compared to the 124 and 201's.

Gilly