I am about to start this build (see-through version) with the SMS detail set. Unfortunately I do not have much reference material and I don't know these cars half as well as F1's.
In the detail set, there is one part that seems not to be replacing any kit part. It is called a "digital sign marker" and it must be placed in the passenger side window. That's all that is said about this.
I know if you know the answer, this is a stupid question. Anyone out there that can shed a bit of light on this for me? Does this get mounted inside the window or on the outside. What is it?