What are ALL the components for Cruise Control in my "99" XJ ?

Greetings all,..I am new here.

Just purchased a 99 XJ and that doesn't have cruise. There is one at a bone yard near me with cruise, however, I am not sure as to what all the components are? Can someone one help me out and list all the components that I will need to salvage to add to my XJ.

Thanks