This typical circuit diagram of the blower motor and blower resistor circuit applies to the 1998, 1999, 2000 4.0L Ford Ranger and Mazda B4000.
More 4.0L Ford Tutorials
You can find a complete list of tutorials here: Ford 4.0L Index Of Articles.
Here's a sample of the tutorials you'll find there:
- How To Test The Coil Pack (Ford 3.0L, 3.8L, 4.0L, 4.2L).
- How To Test The TPS (1991-1995 4.0L Ford Explorer).
- How To Clean The Ford Mass Air Flow Sensor (at: troubleshootmyvehicle.com).
- 1994 Ford 4.0L Explorer And Ranger PCM Pin Out Chart.
If this info really saved the day, buy me a beer!