The dome light and courtesy lights on the door of your car won't turn off and causes the battery to run down. So you call AAA to jump off the battery. You've already removed the dome light but couldn't get the door lights out. The wrecker guy from AAA removes them for you. So you drive around for a couple of months without those lights, which is inconvenient at night, but you get used to it. Then last Friday the car is towed to the auto repair shop because it won't start. It goes rrr-rrr-rrr-rrr, but that's it. That same AAA wrecker guy comes over to let you know it's not the battery and asks what you did about the lights. Then he tows the car away. So when the auto repair guy calls to let you know it's the fuel pump and to give you the bad news about how much it will cost, you ask them to check the problem with the lights not going off. They take care of the fuel pump and the light situation. Fast forward to when you pick up the car, and they show you how that switch that dims the dashboard lights will make them stay on when it's turned all the way to the right and makes a clicking sound. That's all that was wrong. Yep.
Not that I would know anything about this.