I did an additional mod to the Premier last weekend. It was something that I wasn't planning on doing, but should have done a lot earlier.
I don't like to carry a lot of DVDs and most of the media that we watch (me and the kids) is stored on my iPod. I have a lot of movies, podcasts, and kids shows on it. I thought it was really convenient because there was the cable that came with the DVD headunit to watch external sources. The only problem is having that cable sticking out from the front when it's being used. Because it sticks out so much, it gets bumped into accidentally a lot. The first major time, the socket cracked and the plug was loose, but it was still usable. The second major hit was the death blow because the mini-plug snapped and got embedded in the headunit.
I had planned on trying to get access to the back of the TV to use the rear inputs, but I couldn't figure out how to do that without causing major damage. It was also impossible to try to run the wires through the vertical pipe of the swivel mount. So instead I looked in behind the DVD headunit because it was easy to remove:
1. First you carefully remove the trim and it exposes four screws that hold the headunit in.
2. Once that's done, the whole thing slides out and you can see the nest of wires in behind it:

Luckily, all the wires are clearly labeled and I could see that the Aux1 input was not used. Aux3 is for the front input (which is now broken on mine).
I followed the factory wiring and ran the wires for my iPod through the hole I had cut for the antenna booster in the cabinet above the TV and dropped them down the wall. Then I cut an additional two holes (one through each section) in the little shelf under the TV for the iPod to connect to the rear of the DVD headunit:

Now the entire setup is much neater and tidier. We can watch all our media without extra wires hanging all over the place. Even if you don't have an iPod, you could run regular RCA cables there for external input. I think they should have done something like that straight from the factory.
Anyway, I'm happy now that everything works again and I really like the clean look to it. Plus, my wife doesn't feel so bad anymore about busting up the DVD player :C.