My car didn't come with a rear o2 sensor and I'm trying to find the right one but there are three different o2 sensor plugs.

Instead of worrying about the correct plug I'd rather just splice them together.

The only problem is the o2 sensor I have has the following wire:

black
black
blue
white

The harness on the car has a different color scheme.

black
white
red/yellow wire
blue/white (or yellow?) wire

Here's a picture of the connector:



Does anyone know which wires go together? I have a service manual but can't seem to find a wiring diagram for this plug.