The parts we put on the website are examples to give you an idea of prices. We haven't actually tested any of the designs with a real JD40 circuit board & switches, though I believe it should be at least workable.
Somebody elsewhere pointed out that the slot for the cable was in the wrong place for the JD40 example, but I have no way of knowing if this is correct.
If someone could verify our design or post a design that works for sure, that would be greatly appreciated.