'93 s320 benz

135,000mi

the heater blower motor will not shut off. I have tried everything I can think of. I finally had to disconnect the battery to protect it. What I would like to know is which fuse can I pull that will shut the motor off until I can get it serviced. I know that there are two fuse boxes, one in engine comp and one in trunk. But for the life of me cannot read/decipher which one will do the trick. guess I should get new glasses also.
Thanks, Michael