It is located on top of the fiberglass AC housing that projects into the engine compartment on, the passenger side, held by 2 screws.
The blower motor resistor is located under the glove compartment in a black shroud.
Attached to the blower motor under the passenger dash
blower resistor is bad
Replacing the 1997 Chevrolet suburban blower motor resistor can correct your air output issue. The air output issue could because by other things.
For the 1989 Dodge Ram, the heater blower motor resistor can be found on the passenger's side, on the bottom of the heater box. It is beside the blower motor.
You either have a blown fuse, defective blower motor, defective blower motor switch, or a defective blower motor resistor pack.
Either the blower motor fan switch is bad or the blower motor resistor pack is defective. It is more than likely the blower motor resistor pack.
Under the hood to the left of the blower motor mounted in the housing on the firewall...
It is usually under the dash on the passenger side right next to the blower motor. On some, it is mounted on the same bracket as the blower motor.
Only for the high speed. The lower speeds are controlled with the use of a blower motor speed resistor.
A malfunctioning blower motor resistor will cause the blower motor not to work. When the resistor is bad the blower motors will not turn on.
The blower motor resistor is located under the glove box right behind the blower motor. There is a kick shield under the dash that needs to be removed. The resistor has three harnesses connectors. Unplugged the connectors. Remove the two screws holding it in place. If the resistor is highly corroded or broken, replace.