The blower motor resistor on a 1998 Ford Ranger is typically located
behind the glove box. To access it, you'll usually need to remove the glove box itself. However, the exact location can vary slightly depending on the trim level and specific model of your Ranger. It's often attached to the blower motor housing.
Before you start, it's always a good idea to consult a repair manual specific to your 1998 Ford Ranger to get the most accurate location and removal instructions. A Haynes or Chilton manual would be helpful. You can also search online for diagrams and videos specific to your year and model.