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This question already has an answer here:

I've purchased a Bosch premium O2 sensor kit with SmartLink. It comes with a wiring chart but I have 2 wires that are not on it. My original O2 sensor has a red and yellow wire along with gray and black. Which wires are the heater wires and which wires are the signal and ground?

marked as duplicate by Zaid, anonymous2, Pᴀᴜʟsᴛᴇʀ2 Nov 5 '16 at 11:21

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These 2 links should help you out. These 2 video links give step by step instructions on the wiring of O2 sensors as well as how to install them.

Simple, step-by-step instructions to assemble and install a Bosch Premium Oxygen Sensor with SmartLink ..

https://youtu.be/ex1Hki6-NHw

O2 or Oxygen Sensor Heater (the 2 grey connectors are the heater +/-)

https://youtu.be/Z-TOdXKh2q8

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    Can you bring the information to SE? as it is, this is a link only answer and is ripe for deletion. – Pᴀᴜʟsᴛᴇʀ2 Nov 1 '16 at 9:51
  • I think what @Pᴀᴜʟsᴛᴇʀ2 had in mind was a digest of what information the videos contained. – Lynn Crumbling Nov 1 '16 at 16:16
  • @LynnCrumbling - Exactly! Thanks for helping me clarify. No need for people to down vote this, IMHO. I'd just like to see the information posted here, is all. Hopefully The Heretic can accommodate. – Pᴀᴜʟsᴛᴇʀ2 Nov 1 '16 at 16:55

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