Hook Up Meaning

(idiomatic, slang) To supply someone with goods or services.

Example: 2013 June 1, “A better waterworks”[1], The Economist, volume 407, number 8838, page 5 (Technology Quarterly):
  An artificial kidney these days still means a refrigerator-sized dialysis machine. Such devices mimic […] real kidneys […] . But they are nothing like as efficient, and can cause bleeding, clotting and infection—not to mention inconvenience for patients, who typically need to be hooked up to one three times a week for hours at a time.
2008, Nate Green, Built for Show, page 3
  You work out so you can increase your chances of hooking up. That means having the kind of physique that looks good in clothes and looks even better naked.
  That guy told me he didn't get his ticket, can you hook him up for me?
  Hey man, can you hook me up with some weed?