what is cause of power sears, mirrors & steering column adjustment not working?

What is your question?

I got car couple months ago cheap from a friend. Mechanically it is sound and runs great but has other issues..I intend to fix all bugs/problems myself so I can put my limited money into needed parts/accessories. What would cause all 3 items: ie seats, mirrors, steering wheel position to not work at all when their buttons are pushed? Thanks for the help.