The wiring, plumbing, and vacuum for the dual heat controls are very different from the US cars. I am still looking. I did get a wiring diagram for a 107 280SL from George Murphy, but I really need the vacuum setup.

The M110 manual is great, but expensive, and about half of it is for the carb version. If you don't need that, the Haynes manual for the 280 123 cars is OK. All MHO.

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Chuck Taylor
Falls Church VA
'66 200, '66 230SL, '96 SL500. Sold: '81 380SL, '86 300E, '72 250C, '95 C220, 3 '84 280SL's '90 420SEL, '72 280SE, '73 280C, '78 280SE, '70 280SL, '77 450SL, '85 380SL, '87 560SL, '85 380SL, '72 350SL, '96 S500 Coupe