My o2 sensor on my 94 RS needs to be replaced and I am reluctant to shell out the $200+ for an OEM sensor so I opted for the Borg Warner universal sensor. The only problem is that it doesn't come with a wiring diagram so I have no idea which wires correspond. The origional sensor has two black wires, a white and a green, and the Borg Warner has two whites, a black and a grey. I am assuming that the blacks on the old sensor correspond to the whites on the new. What about the other two? Any help would be greatly appreciated.

JC