i just bought a new o2 sensor...the brand is bosch and it has 4 wire (2 black, white, blue) and my old hardness has 2 black, white, and green. i'm pretty sure it goes color to color, but does the black matters if i connect them in any way?

 

i have been told that the black wires doesnt matter which way you wire, i re wired the black ones differntly each time and didnt effect the o2 in anyway but that was just me.

 

thanks, i'll try that.