2005 Saturn Ion

I got a OEM CD player cheap off eBay and it looks just like the one that's in the car now. I thought I saw that the Ion's wiring harnesses changed a couple years back. Will I have any problems installing it? CD player from eBay for visual reference It's going in a 2005 Saturn Ion 1 Sedan Thanks in advance.*JP Neon*

The new saturn harness will work, but you will have to move the speaker wires around in the harness to make it work.  The power wires are in the correct locations but the speaker wires are not.  Here's the solution.  LF = tan and gray; RF= lt green, green; LR= yellow and brown; and RR= lt blue and blue.  Lighter wires are (+) in the front and darker wires are (+) in the rear.  Do it right the first time

Thanks*JP Neon*