I would suggest that you purchase the US 107 CD from Mercedes or from any number of online vendors, or go to alldatadiy.com and get a subscription for your car. Both will give you wiring diagrams, component locations, etc. The CD has a detailed "functional" explanation of the injection and idle systems that is very useful.

This stuff may also be out on the web somewhere

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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