How do you bypass DVD on dual xdvdn8190?

If these decks are the same i have the xdvd8183, you could try this. Insert a DVD wait until you hear the sound, press stop twice on the remote then enter 26604 then ENTER and it should work. If not they have changed it, by the way you have to ground the park brake wire to a ground even on the stereo ground harness. Hopes this helps anybody