Help: 6 button Jamma

Hey, I have a tekken 3 in a dynamo cut corner cab. Tekken has the 2 buttons on the jamma harness and 2 on the kick harness. I want to pick up a blue elf 108in1 but there is no adapter for a kick harness. How do I wire up the jamma to be 6 buttons without the use of a kick harness???

you'd have to get the blue elf schematics and rewire the cabinet. or you could build a converter so you can use a kick harness and keep the cab wiring intact.

I know its jamma, and I think its set up so the pinout reads button 1 down the button 6 on each side of the pinout(where normal jamma goes 1-3), with button 6 replacing the ground. So would that mean remove my kick harness, add the wires to the jamma connector and re wire the other 2 buttons in the same way??