Alarm goes off shortly after new headlight bulbs installed.

Interestingly, the car just sounded an alarm - for the first time ever. We don't have an added alarm package that I'm at all aware of (after 19 years). Driver parked in garage, came inside, then suddenly – blaring honking, a siren, and all lights flashing. Again, this is a first. And the only thing that's changed recently is the healdight bulb installation last night. Possibly related. Or what could have started this? Also noticed, for a week now, in case it's related, that the touch display is now, finally, always off when starting the car until a button is pressed. For years, it has been automatically on when starting the car. Any ideas what this means or if related to the alarm? Your thoughts please...

 

We're referring to the touch display. Additional info: For all the past several years, as I recall, the touch display always coming on, automatically, when starting the car. I posted here a couple years ago on this, seeking a means to stop this, unfortunately to know avail. Suddenly, several days ago, it seems to have reset itself and now works like normal, i.e., it is off when the car is started until a displat button is pressed.

Terminal punctuation is important for clarity.

 

Yes, the red door open indicator light works.