I'm chasing down a rough idle problem and as I'm running down the list of possible causes (and since I already replaced my O2 sensors with no change), I wanted to test the relay to the sensors, I found the diagram and chapter in the Bentley about this, but my e-box looks a bit different than the diagram, and I can't tell which relay is the one I want.

What's the color of the relay, or what is the best way to figure out which it is?
Trace the wires back to the relay...or is there an easier way?


Thanks in Advance
Jim