Dealer is the best source. I had to replace several of the actual underlying switches because the backlight had burned out. Surprised I had to replace the entire switch and not just the bulb. Ended up replacing all of the switch toggles up top because they were faded. I think the switches are about $15 and the toggle only is about $3. Had to go to several dealers to get all of the toggles. If you replace the switches, make sure you get the small neoprene gasket for the underside - they fall off easily and aren't always with the switch when you buy it.