So this forum seems relatively new from the level of post I see in each category, but I have to ask. Has anyone taken apart their dash to see how the radio or screen is hooked up? Reason asking, I have an SL w/out the Bose system or Navigation but would love to have those features w/out paying dealership pricing. So just my thought, the screen isn't touch more so just a video input (i just don't know what type of input yet.) Thinking about replacing the screen w/ something with more visual inputs. Also does anyone know if the stereo system w/out Bose is amplified? Need to replace these dead OEM speakers w/ quality and posibily amplify the aftermarkets. Possible DIY w/pictures soon.