simple really.......will this wiring harness work in my focus?

http://www.caraudiodirect.co.uk/prod...oducts_id=3478

it says 1999 to 2000 models an mine is a 2004,but it's the only one i can find that lets me use the stalk controls

is the wiring different? ..if so any idea to why it was changed?

cheers in advance

matt g