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While most of this book seems to tell you which component to replace, rather than guide you through repairing them, it does have some very interesting charts and procedures that should enable you to at least know why your auto temp system doesn't work as you think it should. The manual shows signs of use, hey it is 50 years old, but I didn't notice any missing pages or obliterated print/pictures. $20.00 will mail it to you in CONUS, overseas will cost more depending on postage.