The interior lights in my 2002 ford f150 crew cab will not turn off
You have a door switch stuck. Usually the drivers side. It is built into the latch on the door. Try spraying some wd-40 in the latches and see if it will free them up. Spray it in the latch and slam the door you may have to do it 10-15 times. If this doesn't work you will have to replace the switch.
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