The 2005 Vues have a different wiring scheme on the headunit, but with a connector style that is compatible with the 2004. In otherwords, they re-arranged the wires. After a good bit of research on the wiring, I bought a 2004 harness (although it was sold as a 2005), gently removed the pins and put them back in the order that works on the 2005. Below is the wiring order for the 2005 Wire harness. The first column is what the wire does, second colum is the AFTERMARKET wire color, the third column is the OEM (in car) wire color (for reference). The aftermarket harness should have the pins labeled on the plastic.
http://img107.imageshack.us/img107/273/wiring8nq.jpg
I have tested and installed this and it is working in my car (2005 Vue w/6 Speaker OEM speaker system). but use this info at your own discression, I am not responsible if you screw anything up!