I think you're right. I wired up a speaker and started playing around with it some and found something interesting. The display actually comes on with the time and lights up when you push the tune button, but doesn't stay lit for a few seconds then it goes off. Only buttons that I can tell are working are the hour and minute button can change the time and the tune can illuminate the display, but that's it. Theft light isn't lit. Just strange... Anyone seen this before? I'll try googling and see what I can find.