Check the old posts for more info. They come from Helm or Ford Technical Service Publications, 1-800-782-4356. You can order the Workshop Manual and the Wiring Diagram. There is supposed to be a CD available, but I don't know much about it. I don't have part numbers here, but the '06 and '05 are different. Check the old threads or archives. E-bay has them from time to time. Total cost is a little over $200 plus shipping.