Hmm, that's harder. You'll have to buy one, I don't think there are any free PDFs of the Contour manual on the web. I suggest eBay or maybe visit your local junkyard if it has many 'tours (the one around here has two rows dedicated to Probes and 'tours
), maybe they'll have a manual.
EDIT: .. and I'm not talking about the "repair manuals" they sell on eBay (although those are helpful too) ... I'm referring to the real manuals you get when you buy a new car. Try to see if, whoever you're buying the car from, still has the manual lying around the house (if it's a private sale). If it's a Ford dealer, you might be able to bug them into getting one for you if you won't buy the car without it, haha.