I have searched the forum for a Central Locking System vacuum hose schematic for this vehicle and have been unable to find one. The pump on my customers car is dead and I have tried 4 used ones. I finally found a used one that was weak but works good enough to use as a test unit but it did not have the same part number and not as many ports. I have determined that the driver door cls element is leaking in the unlock mode. I would like to test all the other line but not sure where the all go. I have been working on these cars for 36 years but no longer have access to alldata and the like. The par number on my pump is 140 800 28 48 and it has 6 ports. Any one have a schematic with color coding for the hoses? The customer is okay with buying a new pump since we have gone through so many ebay pumps that were guaranteed good, thankfully I have gotten my money back on each one. Thanks, Chris.

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Cars:
1993 400E
1993 300TE Wagon
1985 300D Turbodiesel w/ 688,000 Miles On Original Eng/Trans
1979 300SD
1977 Euro 6.9
1967 230S IMA Universal Wagon
100 Or So Parts Cars

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