Ghange Cabrio Headlights

I find myself in the exact same situation as the Cabrio Headlight guy. I need to change the headlight in my girlfriends car and I opened the hood last night and wasn't sure what to do with the big wire or anything else for that matter. Before I just go in with my tools and spend time figuring it all out I wondered if anyone knew how to change the headlight of a 2000 or 2001 Cabrio