This is the Original Factory Mooney M20K Service Electrical Schematics Manual MAN501 The file is an Adobe pdf file & use Adobe Acrobat reader to access information (which is available for free on the web) 116 Pages of Mooney M-20 K Service Electrical Schematics Originally Published Sept 1997 Revised March 2000 Issued July 2005 Though non-current it is an excellent reference material Sold for informational purposes only