Is their anyway to make the navi screen play other things besides the navi? For example I would like to make it play DVD's and stuff with out having to replace the screen with something else.

 

not that i know of but taggin along that would be cool... my old pioneer navi i had in my work truck had a switch i could by pass and play dvds while driving... i know the rear trunk mounted dvd reader which contains the gps disk i tried puttin in a dvd and it said error can not read disk

 

search doms nav2go, also many other threads in the audio section regarding dvd installs. search and you shall receive

you can't just put a dvd in the nav unit and have it play, but there are ways to play dvds with the right products.

check out a thread in the audio section i started with similar questions, "iphone 3g dock/nav" or something like that. hth

 

There are all kinds of hookups and conversions.

Search the Electronics/Navi Sub-Forum.