Are you guys talking about the ground? That picture is missing the ground connection.
Harshboy's diagram had a different looking controller PCB, but the extra connection were for ground.
behold my red lines
just connect from anywhere on the d-pad's big green section to anywhere on the main controller's two big green sections. It completes the d-pad circuit.
It takes a big man to cry, but it takes a bigger man to laugh at that man.