OK I cannot remember if the clock light is always on whether the car is running or not. Once again my clock light is not on and I just got it back from having my Alpine car stereo worked on. I could've sworn that when sitting in my garage and the car was not running I could see the time on the clock. Of course the stereo shop is denying they clock light is there problem. I've already had the clock replaced the last time the car was at this stereo shop because the clock was not working at all when I got it back from them. TIA, Rick