It may be the wiper switch, it may be the motor. You may want to try putting power directly to the motor to confirm that the motor is good.
blower relay located on the engine compartment by the firewall
check fuses or relays
Fuses and relays are not your problem. The Blower Motor Resistor Pack is defective and needs replacing.Fuses and relays are not your problem. The Blower Motor Resistor Pack is defective and needs replacing.
If you have checked the blower motor and it does function when power is applied then I would suspect the Blower Motor Resistor Pack is defective. It is also possible the blower motor speed control is bad, but highly unlikely.
Check fuses and relays
First check fuses, relays to wiper motor. Then check power to wiper motor. Then check linkage to wiper motor.
check your relays and fuses. if they are all good, check the fan motor.
depending on year. it could be a number of things. check relays, fuses and motor.
Check power to window switch. Common cause. Check power to window motor. If none then check fuses/relays.
Fuses and relays are under the dash.. there's a panel you remove on the passenger side (where a glove compartment would typically be on a truck which had one), and the panel is right there.. there'll be a plastic sheet which you remove to expose the fuses and relays, and that has a diagram on it.
Check the fuses and relays.
The heater blower motor is #19 in the power distribution box under the hood, which also houses your relays.