Mine doesn't work either (obviously) but I just assumed the garage had taken the bulb out to stop the battery going flat while it was being displayed with the doors open. I was going to 'fix' it soon...
This is going to be a bit awkward now it's getting darker - what a stupid thing! Why's it there if it's not designed to work?
This is going to be a bit awkward now it's getting darker - what a stupid thing! Why's it there if it's not designed to work?