I understand the climate control fuse is locate somewhere "special".

Okay, someone please share this secret please!
There is no white paper in my fuse box to let me know who's who with the fuses. And my climate control blows only hot, not cold. (I am reading up on this, believe me, on this forum.)
I just bought a 78 MB 300d the other week to run on the biodiesel we make. Runs good, but has some issues. Glad to find this forum!!!!
Looks like I got myself a new hobby (car repair!) when I bought this car.
THANKS FOR ANY HELP.
bebu