GM Headrest DVDs - video out?
 

I finally bit the bullet and got a set of the GM factory headrest DVD units ($810 on eBay). I was hoping to run a 'video out' to the 'aux video in' on my [factory] navigation head unit [via the Lockpick 320 so my front seat passenger could watch the video while in motion]. Unfortunately, it doesn't look like the controller has a video out.

There is an unused port on the controller for some sort of funky plug. Does anyone on here know if that happens to be a video out jack and if there is a cable available to run it into the aux video in jack on the head unit? ...or any other way to get the video to a standard video cable?

Thanks!