It's time to change the after CAT sensor on my '05 S. I've used universals on all my prior cars when they needed replacement but they were one or two wire ones and I was always lucky enough to get universals with matching colors on the wires. Since the Cooper is a 4 wire sensor I wanted to get things straight before I start the project.

I've searched the forums but can't find anyone who posted a specific universal part and which colored wires on the universal matched to the factory installed sensor.

I know the colors don't match because many people complained that it took time to find which one went where but no one explained the final correct results. If anyone out there has done theirs, please let me know which part number you used, or manufacurer and which universal wires matched which factory wires.


Thanks!

Ron B.