I left the code unlocked, there is many more pickup combinations possible, including the Dingwall All On, bridge/middle with neck series. I'd love to eventually make a simple app to let you easily access them all. I have to make back some of the money its cost me to get this far before I invest more into it though. As of right now you'd need Arduino IDE and the correct board settings to access it.
Position 11 right now is bridge/middle series with neck parallel. So there is actually three all on settings, just not the dingwall bridge/middle with neck series.
I did indeed install one in a dingwall last week, pretty straight forward, you’ll need to solder the black and green wires of the middle pickup together to match the others. Send the red wire from each pickup to positive, the white wire to negative, and the shield to any negative or ground.
You can daisy chain the battery positive and negative from the same terminals on the darkglass. Note that the 4-way switch you are replacing has four grounds on the right, and the yellow wire is for the battery negative. Run that yellow cable to the battery negative of your preamp and then daisy chain to the 12-way switch; this ensures both units are not drawing power when the jack is removed. Just make sure the battery negative is not making contact with the either active units when the jack is removed. When the jack is removed see if you can hear the 12 way's relays clicking still, you dont want that.
I've attached an in progress install guide