My DaC has an inset slot for the game instructions/ball in play illuminated card. Unfortunately my machine did not have this special card, so I set out to make one. Peter (the famous Inchikino) supplied me with the instruction card file (thanks mate), and the backflash card file he has is printed inverse (all letters/numbers back to front). I chose to create my own backflash as a part of the instruction card. Here is the final result:
The process (I have never written a resto type thread so here goes lol).
Take Peter's file, and print it on off-yellow paper.
Next I re-created the ball in play numbers/game-over text (used the black reflector thingy that sits in the apron slot over the bulbs to get the spacing right). This was printed on translucent paper (thought it gave some authenticity compared to the original cards). I am pretty sure the originals were white lettering/numbering, this deviation doesnt concern me though.
This translucent/now printed film was applied behind the ball in play area in the gamecard.
The whole thing contacted to keep it together, and look better. Next a plain white piece of thin cardboard was placed under the game card, but sitting just under the ball in play area. This card simply obscures shadowing from stray lighting.
Decided that the black insert thingy could do with some reflective material on its interior to beef-up the light out-put. This was just reflective cardboard that I bought from K-mart, cut to size and glued in.
Put in all in, looks pretty decent to me, yes not quite original but I am happy.