Bought a new upper o2 sensor but the clip on wiring harness is melted so I want to straightwire them to o2 sensor.

  • Harness wires... black, tan, gray, green with orange stripe
  • Oxygen sensor... black, gray, white, white
  • Can you identify the original position in the melted clip - that will tell you which wire goes with which...
    – Solar Mike
    Jun 20, 2018 at 5:18
  • Sorry.. no. O2 sensor went out so I changed it. And then... Jun 20, 2018 at 5:38
  • No melted to bad. Cut both ends around melted clips but can't color coordinate them together Jun 20, 2018 at 5:44
  • Does this Q&A help you? Jun 21, 2018 at 0:46

1 Answer 1


Here are the pinouts for the truck harness side of the O2 sensors, upstream and downstream. This should give you a sense of wire color and clock location in the plug.

You may need to go to the parts store and take a picture of an undamaged O2 sensor to get things connected properly.

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