I was surprised and wiggled it around for a while. Eventually I figured out that the factory fog light switch was on and even with the headlights off, it turned on the driving lights. A few more wiggles and I realized I was somehow completing the circuit though my body. I then plugged and probed with this inline fuse attached to two crimped terminals until I figured out which two plugs did it. I used the inline fuse to protect the Jeep from short circuits.