These master switches were operated by the long handles each side of the box by the guard when required for lighting the cars in night time use. This eliminated having to go into every compartment to turn lights on or off - The guard would reach in between cars whilst checking his train and activate or deactivate in one action.
But whats that Plug thingy above the switch box for ???
Now this seemed like a simple subject to begin with, however it actually was surprisingly difficult to find much photographic evidence of this detail on carriage ends - of course this detail was rarely photographed as often it was jammed in between two carriages so not seen unless the end of a carriage was captured like this picture of an AT captured by Geoff Blee.
Written evidence of course is even less so available, although the Carriage Book "Bible" did elude to some information regarding coupling of Carriages into pairs during the war to share the use of one Generator. This just added to my research as now there was an explanation for that plug connection of some sort, one end of which can be seen above the black switch box.
But its too short to connect to another car!
Whilst I had a couple of pictures showing the switch boxes and the short dangly male type plug, there was even less evidence of the other end or what plugged into that male plug to reach the next car.
Fortunately this picture below (the only one I have found) came to light from the Rail Heritage WA collection of a two car suburban at Claremont station showing what appears to be about 3 - 4 feet of cable attached to the end of the car and left to dangle. This of course gave enough cable length to be joined across to the next car. At last a photographic answer to my problem.
So, now I had two items of interest to add to the ends of my AT cars and with that knowledge I eventually got down to making a pattern for the parts which looks like this.
Here below is how the Switch and Cable details look up close on my models. I feel that this detail has added just that little bit of extra appearance value to what would otherwise be a very bland carriage end.
These parts will become available soon!