If it's the case that my headlight switch is bad and needs to be repalced to fix the brightness of the radio and odometer, would that also explain why it seems like my headlights are dimmer than usual lately too? I just thought it had to be my imagination. Would the headlight switch have anything to do with how bright my headlights are? Extra resistance in the switch would cause them to be dimmer? The car's lights turn on automatically when it's dark out, so I'm not so sure if the headlight switch would have anything to do with it. While I was driving to work, I turned the light switch on to see if they got any dimmer or brighter with the light switch on vs off and it was the same.