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None of my interior lights work, dome or door. The side mirrors courtesy lights light up when any door is opened as they should. The dome overide button and headlight control module was replaced. The fuse for the circuit is also good.

Answers from the Automotive Experts

Jessica Howe, Automotive Expert & Coach at AskPatty.com

Hello, 

Thank you for writing in. Checking the fuse and the switch were great steps towards diagnosing the issue. At this point, the fastest and most definitive way to find the problem is through electrical testing. The circuit will need to be traced and tested for power until the problem is located. This is usually done with a test light or multimeter. 

On the other hand, the most likely cause besides a blown fuse or faulty switch is bad wiring. There may be a short somewhere, a loose connection, or a broken wire. A visual inspection may be enough to find the problem if this is the case. All wiring should be clean, dry, and tight. 

Good luck!


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