I have a 2000 Ford ranger and tonight the door ajar light wont go off and the dome light wont go off I finally took the bulb out m but why would this happen and how do I fix it> ( is not my truck I am borrowing it from my ex for the summer)
In the doorjamb there will be a small button which should get depressed by closing the door. This is the door's pin switch. In most North American and Japanese vehicles this switch will show a ground when the door is open, and an open circuit when the door is closed.
Most of the time, this is just below the door striker on the car body, but in the occasional instance it will be in between the door hinges.