S-Class (W140) 1991-1999: 300 SD, S 350TD, 300 SE 2.8, S280, 300 SE 3.2, 300 SEL 3.2, S320, S320L, 400 SE, S420, 400 SEL, S420L, 500 SE, S500, 500 SEL, S500L, 600 SE, S600, 600 SEL, S600L, 500 SEC, 600 SEC

Wiring Harness Fuel Injection schematic needed

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Old Feb 11, 2011 | 05:48 PM
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1993 Mercedes Benz 300SE
Wiring Harness Fuel Injection schematic needed

In the process of rebuilding wiring harness for my 1993 300SE 3.2L, I accidentally cut the wires to the connector that hooks to the magnet for camshaft adjustment. The entire wiring harness was bad throughout as all the insulation was dried and cracking. The male (2) prongs are on the magnet and the female connector has the numbers 1 and 2 on it and eventually hooks into the large 36 pin connector pictured. Can anyone tell me where pins 1 and 2 on small connector attach to on the 36 pin connector (what # pins?). The pins are labeled 1 through 36 on the large connector. See attached pictures

Thanks in advance William
Attached Thumbnails Wiring Harness Fuel Injection schematic needed-magnet-camshaft-adjustment.jpg   Wiring Harness Fuel Injection schematic needed-two-pin-female-connector.jpg   Wiring Harness Fuel Injection schematic needed-36-pin-connector.jpg   Wiring Harness Fuel Injection schematic needed-wiring-harness-fuel-injection-1993-300se.jpg  
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Old Mar 7, 2011 | 12:18 AM
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99 ML430; 91 500SL; 93 600SL; 97 S320; 2000 S430; 95 S600 coupe
Hey William,

I rebuild those harnesses but I don't have any diagrams of them. I will actually document one when new harness will come in for rebuild.

From what I know cam advancer wires go somewhere in the center of main connector. Sensors usually go to the end of main plug, injectors in the beginning, injector positives and cam advancer go in the middle somewhere. polarity is not important as cam advancer is electromagnet and will pull advancer valve in when current is applied. Valve is not polarized.

When I rebuild harnesses I cut one wire at the time and replace it with new one. You can replace all other wires and do cam advancer wires last so they will go to last available terminals on main connector.

Cheers,

Victor
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Old Mar 7, 2011 | 12:51 AM
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1993 Mercedes Benz 300SE
Hi Victor,

Thanks for the reply. I got a schematic for the engine wiring and figured it out. The car runs like a champ again

William
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Old Jan 23, 2012 | 05:49 PM
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W220 S500 2003 4Matic & W140 1998 S600 V12
Hey, does this apply to 96+ models? are they the same technology/magnets
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Old Jan 24, 2012 | 04:31 PM
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(1960) 300d, S550 AMG S500 S600 560SEL
Originally Posted by wsmartin1961
Hi Victor,

Thanks for the reply. I got a schematic for the engine wiring and figured it out. The car runs like a champ again

William
can you share the schematic diagram?
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Old Nov 28, 2012 | 06:37 PM
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1993 Mercedes Benz 300se
Originally Posted by wsmartin1961
Hi Victor,

Thanks for the reply. I got a schematic for the engine wiring and figured it out. The car runs like a champ again

William
Hi,can you tell me from where you got the Wiring Harness Fuel Injection schematic. Thanks
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