In Reply to: 02 sensor question? posted by Eric on August 27, 2001 at 01:24:40:
Yes you are right about the black wire. It is the input that goes to the DME and gives the computer information.
Looking at the wiring diag. the white wire comes from the fuel pump relay into the oxygen sensor heater element and the brown/orange is the ground.
I tapped my three wires from my A/F meter into the oxygen sensor (I have the split second one).