I am trying to install a orielly special Bosch o2 sensor and need some help! The wires that are on the sensor itself are two whites, one grey, one black. The wires on the stock connection are two blacks, one red, one white. I need to know which ones to hook together. I looked on vfaq and couldnt find anything. Once this is hooked up the right way I will have my car done. Any help will be greatly appreciated.

It only plugs in one way. Are you saying you don't have a plug on the wire harness?

The sensor that I bought is a universal one. I have to connect the wires one at a time.

Well, I'm going to be the first to say this (in this thread anyway), you should have spent some extra money and bought an OE Mitsubishi O2 sensor. It plugs right in and you won't have any problems with it. I've heard numerous accounts of the Bosch sensors going bad within the first year of use.

BTW, it should have come with a set of instructions as well, detailing the way it should be connected.

I just bought this one for now and then Im going to get a better later. I just wanted to get my car running. I did get instructions with it but I dont know what color the heater wires, ground, etc are ? The wire colors on the car are 1 red, 2 blacks , 1 white. If anyone knows what each wire is thats what Im asking.

o2 sensor I put this one on my car, plugs right in, works great, and cheaper than i found at autoparts stores or the dealer. Plus you can run leaded gas with it if you ever needed to

This pinout should help. Either track the colors or ohm it out with a DMM.

http://www.vfaq.com/mods/ecu-harness-1G.html

Good call, Spy.

im sure the heater wires are the black ones and the ground im pretty sure the white one b/c i've never seen a red ground wire. so im thinking that the red one is the signal wire

take a look here