I'm not sure if it would help, but I have the manual for the Heating, Air Conditioning and Auto Climate Control for the W126, covering 1981 - 1988. If you could be more specific, perhaps I could find what you need. From your post, I'm not clear on whether you need the wiring info. for the A/C compressor "unit", or the auto system (or part of it)....

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1986 560SL
2002 Toyota Camry
1993 Lexus