First, slide the fingerboard inbetween the connector pins and crimp the pins down with the pliars so the fingerboard is held tight and the pins line up with the fingerboard contacts.

Solder the pins to the contacts.

Half done...

This is what it should look like when it is done. Be sure to do both sides, and check that none of the solder makes a connection between two of the contacts.

The idea here is that we are going to run wires from the game pinout at the blue connector to the Jamma pinout at the edge and re-route any wires that don't conform to the Jamma standard.

Mark which side is going to be the "Solder" side of the board and which is the "Parts" side. Do this by plugging the adapter in to your PCB. "Parts side is the side with the chips, "Solder" side is the bottom side.

I start with the Ground wires. Cut and strip a wire that will go from the first Ground on the PCB connector to the first ground on the Jamma edge connector. Put a bit of solder on each end.

Solder it in place.

As you can see here, the wires will have to be re-routed to get Grounds where we need them.

Some wires will have to cross from one side to the other.

Do the same with the +5v, -5V and 12V wires.

Add in sound, video, and controls, etc.

Finished product.