Need Help With O2 Sensor Replacement.

[Haulin' S]

I could use some help. I have a new PCM O2 sensor to install. The old one is out, and I am ready to install the new one. Kragen gave me Bosch 17526, which appears to be the right sensor. However, the wire colors don't match, and tyhe chart that came with the replacement part doesn't make sense. The colors it lists don't seem to be the same colors as the sensor that is being replaced. It's a 94 Chevy C1500 4wd, 5.7 L engine. This sensor is the one mounted in the pipe a few inches before the cat. converter. There are 3 wires on each of the sensors. Old has black, purple and red. New has 2 whites and a black. Can anyone tell me which ones connect to which?

 

Picture below.