Adding up/down to Galaga cabinet with 60 in 1

The adapter has signals for P1 up/down and P2 up/down on it. If the edge connector in your cabinet has contacts in those positions, then you just need to run wires from those contacts to the appropriate connectors on your joystick. If the cabinet connector doesn't have contacts in those positions then you have to get a bit more creative. The less destructive way would be to solder wires to the appropriate signals on the jamma side connector. The more destructive way would be to replace the connector in the cabinet with one that has contacts in all positions and then connect the up down wires in the correct place there.
 
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