Hi; New here. Lots of excellent info to be had. Just bought a 2001 Blazer. It has the Bose system with the controls on the steering wheel. The side with the seek lights up an night but the volimn side does not. How the heck do i change the Bulb or whatever lights it up. Can't see any way to get to it. Thanks

 

They are leds. Your best bet would be searching at scrap yards for one or searching the net. It would be too hard to figure out what led was used to get it right to work properly.