Original factory issued manual. 
Manual year not included, copyright is 1974, so manual may be 1973 or 1974 edition.
Manual may include light markings. 
Includes wiring diagram.
Sticker on front cover; discoloration on front and back cover.
Please reach out with any specific questions and we will be happy to answer them!
Seller is not responsible for suitability of the material and is unable to offer warranties. All sales are final.