The wiring diagram I shared is for a switch that has a back light when the key is powered on. You'd wire the hot jumper from pin 3 to pin 6 if you want it to light when the switch is activated.
If you aren't concerned with your switch being back lit, you can just plug any switch into the SW block in the control harness and it will work as is.
I used one of my aux outputs to power my cooling fan that I added, and I wired it as shown in the diagram I shared. Hot from AUX to Pin 2, ground to pin 1 on the switch. Jumpers as shown and the hot leads from the fan to pin 3 and ground to pin 4. I used a duplex spade connector for the ground to piggy back on pin 4.