It’s really easy
Just feed the cable through the bottom of the clutch handle, stick it through the steering wheel and tighten the end of the cable stopper ( clamp )
And be done with it.
The guy that sold it to you may have re assemble the cable to keep pieces from getting lost.
It’s not that hard, this is a reverse cable system, where the clutch handle pulls the cable housing away from the steering wheel ( away from the clamp end )
Just adjust it at your desired pull and go play. ;)
P.S. The cable most likely goes though the hub and steering wheel at the same hole. You’ll get it. Don’t make me travel all the way to Arizona. :)