OK I'm stumped. Bulb out indicator only comes on when I turn the light switch. I found that it will come on when I just turn on the parking lights. I've been around the car - 2 front baby lights, 4 side markers, 2 back lights AND license plate lights all on and working. Stock lighting. What am I missing? Is there something inside like an ashtray light that will trigger the indicator? I will have to wait til dark to see that. Thanks in advance for help.