Service manual for the Cacsde 36

I am refurbishing a Cascade 36 sloop. I do not have much information about the boats internal systems. Where can I purcahse the original searvice manual for the boat so to understand, electrical, water and rigging.

"We don't need no stinking service manual!" I'm not sure they had one, so many of these boats were owner-finished that they were all different, especially when it came to electrical and plumbing. My suggestion: get a copy of Nigel Calder's book on boat systems (buy the 3rd edition, he made some major changes over the first 2 editions) and use that as a guide for your design. MS