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ok, let me answer your question with another question. HOW DOES THE ODOMETER READ THE MILES? it reads the miles by the speedometer cable which turns the speedo head. the odometer runs off the speedo cable too. So if it reads going up spinning one way, then it'll read backwards spinning the other way. I know it works, but i dont know if it doesn't break anything spinning it backwards alot. You can try, but you probably have alot of spinning to do.