Yanks use 'hook up' differently to the rest of the English-speaking world. They use it in a sexual context or providing an item for somebody that's usually dodgy. Everyone else uses it in the context of meeting someone.
1) I hooked up with him in New York. We made love all night!
2) Hey! Hook a brother up with some dope!
3) I hooked up with my mate in London. I hadn't seen him in years.