I have a 04 Unlimited Wrangler. The fan speed control knob is always breaking I get about 2-3 years and it always seems to happen in the colder times of the year here in the Midwest. Just been keeping a spare in the glove box. What happens is on the back of the knob there is a metal band opens up slightly and the plastic cracks that goes over the metal shaft on the control. This lets the flat keyed plastic roll over the metal shaft of the control. I’ve had it go from barely working and eventually catching to just a free spin and no resistance pulls right off. Just an FYI to check the knob its self because it can mimic a bad switch and cause the fan to work erratically, once the band lets the plastic start to crack. My experience anyway. Liked the video btw.