ok, my n2 lets me us the nav while driving, but won't let me play movies. what can i do to fix this to play movies while driving? thanks

Check out the Sticky at the top of the N-Series Hacks/Mods. Do that

it lets me use the nav. while driving. the guy told me he did the bypass to it and i have all the grounds tied in together.

Well obviously if you can't view movies while in motion, he didn't do something correctly