atomiswave + mas supergun service switch?

My hokuto no ken kit got here today and the buttons default all sorts of crazy onto the supergun. I need to go into the menus and change them, no big deal. However to get into the configuration menu I have to use the test switch to get there (done), and the service switch to select it......... err I don't have a service switch, and none of the buttons on the sticks are wired to it (checked because one is wired to test).

I've been looking at the diagram of the jamma harness and I don't see a service switch anywhere on there.

All help greatly appreciated

EDIT

Mas didn't even put a wire into the jamma harness, I need to find a place that has the connectors/plugs so the harness connects to the board properly and wire it myself, fack.

Any good shops to look at for this stuff?

Try to use the start button. Press it once to move the cursor down, keep it pressed for more than 1 second to select the current highlighted option and change its value.