Why go with aftermarket? You could do a factory install easier. Many here have done it. Tons of information on this site. Check www.cadillacfaq.com for detailed step by step install instructions. Also, do a search here for "DVD NAV". Find out where to look to buy and all specifics. Again, tons of info. Good luck!youngmane said:Does anyone know if its possible to get an aftermarket navigation system installed in the dash?