Thanks to all who respond. I am about to jack up both rear tires tomorrow to find the rear wheel driver's side near the differential axle in the middle. My goal is to find the end of the connector so I can test the resistance of the wheel speed sensor. Some say the end point of the connector is located under the backseat. Remember, I have a 1994 E320 wagon. I tried to locate the end connector in the back seat and does not show up there. Some also said it could be located behind the cover on the right side near the tail light with all those wires there. Again, I tried to locate the end connector but nothing there. Any suggestions, feedback, or ideas. My best bet at this time is to jack up the rear tires and follow the wheel speed sensor cable to its supposedly location. Will follow up on this issue. Once I am able to locate the end connector cable, I will test the resistance to make sure it is in good working order. If not, I will remove ABS wheel speed sensor carefully not to strip the removing bolt as it happened on the front passenger side. Once I remove the sensor and looking for magnetic particles or dust or dirt, clean it up and test for resistance again. If there is still no resistance, then I have to buy a new one and is very expensive. I am hoping the issue is cleaning up or looking for cracks in the cable, etc. so I won't need to buy a new one.