I found these CLIMATE control manuals on Ebay. The 123 manual covers Everything from the early '77 240-300's to the late control systems in the '85's. It also covers the 240 with the manual system.
I bought one earlier. These are worth the money as they give great descriptions and repair procedures.

123 manual http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&_trksid=p3907.m32&_trkparms=tab%3DWatching&item=290289998538&viewitem=

126 manual http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&ssPageName=STRK:MEWAX:IT&item=290290007455

They have 2 days left on them

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My Truck.. 2007 DODGE, 5.9 Cummins, 6spd stick, 4X4. My car..1977 240D, OTHER WHEELS...1955 VW Oval window bug, European Delivery (Holland) with a 1700cc, 2 barrel, Porsche drum brakes. 1939 WILLYS Pick-up. 1967 Triumph 200cc Tiger Cub. 1976 Honda 550F 4cyl Motor Cycle.