Towing Connector

Hi. Hope someone can help. Just purchased a used 2003 Trailblazer LS. It did not come equipped with the trailer wiring connector. I found the mount under the bumper where it hooks up and the wiring harness is there with a cap on it that is twist locked to the bracket. Does anyone know where I can get the oem type connector that mounts to this bracket and that the harness plugs into. I would like to keep from going back to the dealer if possible. I'm sure they are high from them. I also would like to keep this like stock and not use one of the t-connector types if I can. Thanks

My local NAPA dealer has a whole rack of those harnesses. I am sure any national brand parts store stocks it.