The GF-DIO Board comes with 88 positions for components to be added. Each position is a made up of a 3-pin connection. Once the hardware components are plugged into the wire assembly, plug the other end of the wire assembly into one of the positions on the DIO board, taking note of the number position for later configuration.
Take note the 3-pin connectors have two positions each and a ground wire in the middle. The order works like this, first pin is the first position, second pin is the ground wire and the third pin is the second position. Then on the next wire, the first pin repeats the second position, the second pin remains as the ground and the third pin is the third position. The pattern repeats throughout the DIO board.