The DVD set-up was a pain. I did not want to splice my emergency brake cable so I wanted to use a by-pass. (I know this is illegal, hence the parking brake switch, but I don't watch DVDs while driving...) The system was set-up, I had a bypass switch in place, and the receiver would play sound but no picture. Sometimes it would put up a warning message on the screen; usually it would be blank. After MUCH frustration, I found a small blurb in the manual about using the unit after driving. You have to switch the bypass from off to on to off again, then wait a couple of seconds and voila picture. My bad, perhaps, but it could have been more clear...

You can load pictures, but if you load and use an image as a display, it "trumps" the DVD player. When I tried playing a DVD some time after loading my first picture, it was back to the same old sound-no picture problem I had on install (see #1). After toggling the bypass switch several times and realizing that wasn't the problem, it took me some time of trial-and-error testing before finding that I needed to turn off the image to show the DVD.