Hi,

 

Been using my AVIC-8000NEX for a while. Sometimes when I want to send SD video to the rear screens, the option appears greyed out (along with mirror and USB). DVD still works.

 

Other times they all appear fine.

 

No idea what is going on, but frankly it seems like a ridiculous bug.

I had this figured out a while back but have forgotten most of if. There is reason for the graying out - it may take some testing and reading of the manual to break it all down. I don't think it's buggy, but there are certain scenarios that will not allow sending video to the rear. 

 

If you take a look at the owner's manual, there should be a section called, "Selecting the video for the rear display". Reading that should help a lot.