Afternoon alll
I went to the Douglas rally this year and interestingly found the following.
The Rudge club and its spares section were also at the rally, pre-war Rudge also used Miller lighting equipment and their club are reproducing it for sale through their spares section.
The Aero range 1936/7 had a Miller rear light 35E and for 1938 used the 29E that provided the required brake light, the Rudge club have these available along with the correct Miller brake light switch and the correct 7/8” handlebar headlight dip switch, so if you want to make your Aero as original as possible
www.Rudge.parts Steve
