On rotary pots there are 3 wires. The center connector is the output from the pot to the control board. the outer connectors are the positive and ground inputs to the pot. You can wire them either way depending on which way you want the pot to rotate from 0 to 4096, meaning clockwise or anti-clockwise. If you wish to use a pot for the x-axis or y-axis in Windows to calibrate the pot you need to center the pot. this is best done by measuring the output from the pot with an ohmmeter and setting it to 2048. or if you use software like DIView or DXTweak2 it will show you the exact position of the pots rotor. If you need any wiring diagrams or so just ask. I will help as much as I can.