saturn

Hi im currently in the process of switching put my factory 2004 saturn vue stereo head unit and putting in a touch screen. There is a wire that slides on to the old unit via a metal tab. Does anyone know what this is for?? The new touch screen does not have this metal tab and i had it...

First, I apologize if this is the wrong place to post. I'm new to this site. Okay, so I have a base model 2006 saturn ion, four door. I'm made it kind of sporty but I want a new sound system. My speakers are, surprisingly, really decent. They just don't give out much bass. I want something to...