Ahh, I see now, your switch doesn't have the same socket as the loom plug needs.
I would send it back as its wrong, you could end up with a shed load of work to do to get it soldered together.
I can't get mine to work, it shows on VCDS when I switch it on, touch brake and clutch, the speed up and slow down shows, everything is working, the ECU shows as cruise being switched on but there is one setting that seems wrong, think it was the catch speed or something... Something to do with it setting the speed when you set it