Alright. My primary o2 sensor is bad so I ordered a universal one since they wanted an extra $100 just for a plug. I have no problem soldering the new one with the old plug from the bad o2. Anyway, there are 4 wires, blue, white, and two blacks. I'm assuming that those two blacks are ground and doesn't specifically go to a black on the old o2 wiring, correct?

I just want to be sure.

 

Actually. So the blue is signal? Black is heater and the white is ground? At least that's what the instructions say , haha. Also, it came with a goldish, copper lube? What is that for?

 

Another thing. I was just informed I was shipped the wrong part. Apparently the sensor they sent is for secondary while I need primary. Can I still use it? Anyone know how the wires are supposed to match up?

On new Denso I have one blue, two black and one white.

On original o2 I have two white, one gray and one black. Help!