2 choices. The least expensive, direct approach is to buy a portable navigation system. The other is to install a carPC which will allow you interface your ipod as well as get internet map info (assuming you have unlimited data plan on tethered cell phone).nolamurano wrote:I purchased an SL 2010 that did not have the navigation system, and now am wishing I had the ability to hook up my IPOD and load music into the "music box" is there a way to upgrade after purchase?