We have in our inventory stocks of the Clarion MFD Video Cable (Part Number 855-5430-00). This allows video output from a different source into the Multi Function Display.
Basically, it is a male/female socket which is an easy plug into the original wiring just behind the Multi Function Display, and provides a separate socket for the video input to the screen. It's designed for the Nissan Skyline R34 GTR for anyone using a head unit with DVD player or for an external DVD or even a game console. You can even hook it up to your reverse camera or GPS.
If you are interested in this cable, just email us at firstname.lastname@example.org