Chris, can I suggest you start a new thread for the new topic?
That way, when someone does a search to find out about air scoops, they don't have to think of "blue lights" to find the thread.
In saying that, I think lots of threads go off track.
On the lights, I have a cd of a British parts book dated 1942. It covers the older carriers and the Universals. In the front it says 1 tail light with a "Ruby" (red) lens and in the back it says two tail lights with blue lenses.
The U.C. had one tail light, the earlier carriers had two tail lights.