Strange world we live in - I just did the exact same thing - new to the site looking for Headrest DVD install guidance. Bought from the same dealer (from China) in NC on
ebay... beige, no less. Just received the set yesterday and mounted them in the beast. All I have left is to connect to power. That's this evening's task. Great to hear that it works. If this works out well, I may spring for another set for the last row... though I sense it may be a tad bit trickier to deal with.
And yes - the photo gallery referred to was a great guide to get me started.