Headlights problems of the 1999 Acura TL

Hd headlights on 1999 Acura 3. 2 Tl have been stolen twice within a 3 week period. Called dealer to inquire about maybe putting locks or something preventing this from happening again. I was told unfortunately, there is nothing that can be done. With the newer models they are not that easy to take out. I also called several alarm companies to inquire about motion sensor alarms and was told that even with that, if there is no impact to the car, the alarm won't go off, however, it will go off once the hood is touched but by that time, the headlights have been stolen already.