This past March, Google made it possible to create a YouTube account using your Google+ login. Back then it was not possible to connect your Google+ profile to their existing YouTube accounts. Now Google is making it possible to link your Google+ and YouTube accounts.
“Starting today we?re giving you the ability to change how you appear on YouTube, with the option to use your Google+ profile on your YouTube channel. One Google-wide identity was something that proved popular with new YouTube users when we began offering it in March, so we are now extending it to existing users,” said YouTube in a statement.
Google will let you check your comment and video history along with public playlists to find out if you want to link your full name to this content.