Hello Bryan,

Thanks for the reply. I have to respectfully disagree in that most of the post I read state that the W126 has an electric vacuum pump mounted in the truck area near the spare tire.

At any rate what ever the case is I have a 84 300SD which door lock system is operated via said electric vacuum pump. The pump assembly (once opened) has a control circuit which tells the vacuum motor when to shut off.
That circuit is what I'm asking the schematic for.

Hope this clarifies it,

Adriano

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Adriano

83 300SD 500,300 miles (Well seasoned work horse AKA "Put Put")
93 300D 245,000 miles (Moms Baby AKA "Sweat Pea")
87 300D 185,000 miles (Life giver, aka parts car for my 300SD)