Robert Comsol wrote:
What I do not understand is why there is still this discussion (I salute Peter's patience).
It's was designed as a running light for the VFX Enterprise model and is clearly revealed as a running light in TOS.
There is a discussion because not everyone agrees with you.
Various shapes were illuminated equally on the original model.
Can you show me a single Matt Jefferies sketch or vintage blueprint that labels that as a running light?
For TOS to "clearly reveal" that it was a running light, we'd need Scotty telling Kirk that his crews just changed that running light bulbs on both sides of the shuttlebay.