Mercedes-Benz Automatic Climate Control System II Installation Manual And General Information page 13

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Steps #9 and #10: Vacuum Accessory Connections
1) The white vacuum line coming out of the new central control unit slides onto the
fitting onto of the hot water vacuum valve you previously installed.
2) See the diagram of the connector removed from the servo unit below:
-Push/ connect the blue line from the new central control unit into port #8.
-Push/ connect the clear line from
the new central control unit into port #5.
-Push/ connect the red line from
the new central control unit into port #7.
-Push/ connect the provided 4-way
vacuum line connector into ports 1, 2, 3,
and 4.
-Push/ connect the provided 1/8" vacuum plug into port #6.
3) On the bottom of the servo, you disconnected a yellow (or white) and black vacuum
line previously. Using the provided short piece of 1/8" inside diameter vacuum line, slide
each vacuum line into the hose to attach them together.
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