This pic is from a different thread, but shows clearly where you attach the 22awg wire from the contact in the centre of the board.
Connect it to the switch terminal in the same way as the yellow wire on the left side of the picture (ignore all the rest).
That way the battery pos is wired directly (via the through switch silicone wire) to the board, and is also wired to the board centre via the small gauge wire, through the switch.
The unwired switch terminal on the opposite side should still make contact with the battery contact plate at the bottom of the black housing.
