Insert and secure the first foot switch into the enclosure. You can use a 14 mm socket to tighten the nut.

The switch solder lugs should be facing parallel to the side of the enclosure.

Repeat this process for the remaining 13 switches.

All of the foot switches are going to share a ground connection. Run a short wire between the first two switches and solder the wire in place.

Continue this ground wire daisy chaining between all of the foot switches. At the fourteenth switch, run a longer ground wire that is about 4 inches in length. This wire will connect to the Pico 2 GND connection.

Each remaining solder lug on each foot switch will have a wire connected to a GPIO pin on the Pico 2. Start with the last switch with a wire that is about 3 inches long.

The wires that will be closer to the Pico 2 can be about 3 inches long and will gradually get longer the further away from the Pico 2. These should be about the length of the enclosure.

Continue soldering a wire to each of the foot switches to connect them to GPIO.