It is over the passenger side strut tower, accessible from under the hood.
The resistor block or blower motor resistor is used to control the speed of the blower motor. That is how you get the lower speeds on your air conditioning or heater. The higher the resistance the lower the speed of the motor.
Usually if the resistor is bad the heater will only run on full blast.
The front blower resistor on a 98 Dodge Caravan is replaced by removing the cover and disconnecting the wiring harness. The resistor can then be pulled and a new one put in its place.
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.
Somewhere in the path of the air that the rear blower motor blows
The blower motor resistor is mounted in the heater box directly behind the dash glove box. Remove the contents of the glove box and push in on both sides of the glove box stops. The glove box door will fold down exposing the resistor. Remove the two screws holding the resistor in the heater box to remove the resistor.
Because it is an Dodge. GET A CHEVY
Failed blower motor, resistor or switch.
It's behind the glove box door
Behind the glove box
Behind the glove box door.
Replace heater motor resistor.