If I had a DVD player that uses RGB would it be as simple as plug and play to connect it to the NAVI LCD screen?

 

not quite... but close...

Power, ground, acc., GPS antenna, and if you're talking about the Pioneer, you won't have to find the speed sensing wire... It's been a while since I hooked mine up, but it doesn't take much... You'll also need to hook up the Ebrake wire....