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Old 12-23-2007, 11:02 AM
donbryce donbryce is offline
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Join Date: Apr 2003
Location: NB Canada
Posts: 1,173
This is the shop manual diagram for a 1985 500SE central locking system, showing the 'supply pump' located in the trunk right wheelwell. This ought to be close to the pump you have.
The diagram is not ideal for viewing online, my bad, but if you go around clockwise from the top left corner of the 'supply pump', the wiring connectors are labeled as follows (connected device-wire color)(in case you have the plugins with some wires attached):
Orthopedic seats-Bk
Fuse box-RD/BK
RH door actuator-GN
Ground-BR
(2 vacuum lines, 1 to seats, 1 to doors,trunk)
Alarm,Trunk-YL
LH front door-BU
You should be able to ground the pump and get it to run with 12V to the fuse connection and either of the door actuators, I'm guessing.
Attached Thumbnails
wiring of S class vacuum pump-mercedesvacdiag.jpg  
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