Long story short - I bought a 2004-2 NAV DVD (part #99000390203) off Ebay. The seller said it would work in a 2003 (silly me). You guessed it, it doesn't and the seller won't refund my money and yes, I have filed a complaint with EBAY. The 2004-2 DVD only works in MY 2004-2005's with front mounted systems, not trunk mounted systems like my 2003. My current DVD is the 2001-2. Does anyone know what version will work and what the part number is?