I just grabbed a Molex splitter cable I had laying around, clipped one of the connectors off, and used wire nuts to attach needed wires. If you wanted to be neater, you could get a terminal strip.
You can run a single 12v cable to the coin door and just connect multiple QD to it like you would wire the ground on your CP. Do the same for Ground and you are good to go. I don't have pictures here, but it's simple enough you probably don't need them anyway.