I have a 2004 Expedition Eddie Bauer with the OEM DVD system in the rear. I was wanting to know if the D3 will work in this truck? The dvd player uses the radio to control volume.

I put a D3 in my suburban with the rear dvd. My sound does not play through the head unit. I asked at a local stereo shop, and they told me the only way to get the sound through it was to buy an aftermaket one to run into the head unit. Not sure if it is true but that is what i was told.