Got in the car the other day and press the button for rear defrost and there is a little orange light that turn on next to it meaning rear defroster is on, well it didn't come on or the digital lighting on the radio and dash board was dim and when proceeding to drive all the lights light up then after awhile they will dim then bright , I heard this may be a inline fuse for headlamp switch is this correct or does anyone else have ideas, and if I can fix myself or is it something more serious or will it be a garage thing to handle thank you and would appreciate any advice or help .