Good used working dash light dimmer potentiometer in good working condition and corrosion free with good movement thru the entire range. If your dash lights are not working, including the center console lights, it usually means that this switch is bad because it controls all of your dash cluster lights as well as the lights on the center console around the climate control assembly.
If you need instructions on how to replace this switch CLICK HERE to see my Instrument Cluster Removal guide.