E-Class (W124) 1984-1995: E 260, E 300, E 320, E 420, E 500 (Includes CE, T, TD models)

M104.99 engine harness

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Old 12-24-2014, 08:40 AM
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1992 300ce
M104.99 engine harness

I recently replaced my engine harness wire, but there is one connector i cant seem to find where it goes its the connector that on the same line as the ground wire. any suggestion would be greatly appreciated.
Old 12-24-2014, 10:28 AM
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1999 E300TD
Did the original harness have the connector??----and did you order the harness via a VIN!!

If you don't want to search EPC yourself, than at least post a picture and describe the connection---like color of wires and number of wires in the connector

Last edited by Plutoe; 12-24-2014 at 10:34 AM.
Old 12-24-2014, 12:50 PM
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1992 300ce






this is the connector
Old 12-24-2014, 01:26 PM
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Thats cool---however, I am assuming that you can read---that being the case please reread my post and answer the first two questions on the first line of text??

FYI there are three different wiring harnesses available for a 104.992--whats the VIN!!
Old 12-24-2014, 08:55 PM
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Originally Posted by Plutoe
Did the original harness have the connector??----and did you order the harness via a VIN!!

If you don't want to search EPC yourself, than at least post a picture and describe the connection---like color of wires and number of wires in the connector
yes the original harness had this connector nad VIN number would not have helped the engine was replaced
Old 12-24-2014, 11:24 PM
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Ones a ground, probably on the driver side fender inside a black box. It's held on by a 6-7mm nut.

The other is likely the resonance valve, hard to reach unless you remove it. Could also go to a connector on the fender by where the other wire goes.
Old 12-25-2014, 12:45 AM
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Originally Posted by ptoro01
Ones a ground, probably on the driver side fender inside a black box. It's held on by a 6-7mm nut.

The other is likely the resonance valve, hard to reach unless you remove it. Could also go to a connector on the fender by where the other wire goes.


Ok thanks greatly appreciate it!!!!

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