segment for Thursday’s episode of “The Late Late Show With James Corden” and asked random people to help them with their three-hour DIY project.Styles, 28, and Corden, 43, only spent $300 on the video and started the show by knocking on random doors to find someone who would let them use their apartment.“I thought this would be easier Harry, I’ve got to be honest — I thought your face would open a lot of doors,” Corden said as they peruse the city’s searching for a location.The talk show host and the “Harry’s House” singer found help in Brooklynites Isabel, Caroline, Hadley and Sydney.The foursome shares a sun-streamed pad that seemed like the perfect setting to shoot. The “Carpool Karaoke” host then took a tour of the apartment to help form his vision for the music video and saw that one of the girls was a big fan of the “Dunkirk” star.Her room was complete with her own Styles snapshot collage, a One Direction book and a photo of the “Watermelon Sugar” crooner dressed as Harry Potter.“We need to hide all of this because I’m worried you’re a psychopath,” he announced to her.