I've also created the final cable that will handle flipper buttons, coin and start-button + various lights in the front of the machine. The cable runs in a cable "chute" to keep it tidy inside the box.
Its's by far the most complicated cable I've done, with 7 inputs, 1 output, +3.3V, +5V and +12V running in one cable. It was very important to plan ahead since I wanted the cable to be as neat as possible while still packing all the components I needed.
The best thing is that everything worked on the first attempt. I guess planning ahead really makes a difference. The coin mechanism is now correctly connected to accept swedish 1, 5 and 10 kronor and it's nice to know that it all just works!
I think it turned out great!