Dvd/ Nav video interface

[turbojim23]

HI all, my request seems so simple but I can't find an answer. I have recently added oem dvd headrest to my 2011 Murano. I already have a speed and parking brake bypass to override dvd lockout function. All I want now is to watch the main dvd/ front player on rear screens as well as front. If I could add a video/av out from main unit I would be able to use aux inputs in center console. Does anyone know how to patch into the video out of main unit possibly teeing into the video feed to front touch screen? My other choice is to add yet another dvd player to center console.