I can't. Control the speed on my blower or shut it off heater works ac works . on 2000 Volkswagen Jetta

2000 jettA I've. Been taking off fuse to control!

2 answers
I would highly recommend you take it to your local qualified service station so that they could figure out using a wire diagram what is actually causing your blower motor to stay on. If not it could drain the battery or prematurely wear out the blower motor best of wishes
Possible blower resistor but as stated, needs to be checked.