Where is the door switch that controls Door Ajar light and also interior lights on a 2000 Ford Ranger?
The door ajar switch on a 2000 Ford Ranger is located within the door latch mechanism itself, not as a separate easily accessible switch. There isn't one single switch you can easily locate and replace. The switch is integrated into the latch assembly. If your door ajar light is malfunctioning, you'll likely need to replace the entire door latch assembly.