So this is problem I am having on two vehicles. First found it on my Silverado for temp/climate panel. the lights are too dim to see, they don't get any brighter when adjusting dimmer. Second vehicle is Volvo. All panels are dim, and dimmer does not do anything. This vehicle all dash lights and messages and radio is dim and not readable (luckily speed and fuel gages are manual). I think two vehicles might have different issues. Any help much appreciated.