How to hook up oxygen sensor?

[andrewb_80]

I have a 94 v6 car that i changed to a five speed carb 5.0 I am trying to hook up my air to fuel gauge but i cut off the plug on the o2 sensor as well as the harness for the o2 sensor because i didnt need it, but i forgot that i wanted it to hook up this gauge. My question is how do i hook the o2 sensor back up? Basically I have 4 wires from the sensor and 4 wires from the harness and have no idea which wires go to which because there are no plugs on either end. Thanks.

 

[98stangv8]

I have a 94 v6 car that i changed to a five speed carb 5.0 I am trying to hook up my air to fuel gauge but i cut off the plug on the o2 sensor as well as the harness for the o2 sensor because i didnt need it, but i forgot that i wanted it to hook up this gauge. My question is how do i hook the o2 sensor back up? Basically I have 4 wires from the sensor and 4 wires from the harness and have no idea which wires go to which because there are no plugs on either end. Thanks.

aren't they color coded?

 

[98CobraClone]

There's a pin on the ECM, but I don't remember which one. That would you would be able to keep all of the wires in the car, rather than running underneath. I'll do some checking......

 

[Skymarshal]

If it's the same as the last O2 sensor I changed, it will have two black wires and two white wires. The white wires are for the heater, and polarity doesn't matter. The black wires are for the sensor, and I don't know if polarity matters or not. Maybe just hook it up and see if it throws a code....

 

[OxMox]

male end female end

 

[andrewb_80]

If it's the same as the last O2 sensor I changed, it will have two black wires and two white wires. The white wires are for the heater, and polarity doesn't matter. The black wires are for the sensor, and I don't know if polarity matters or not. Maybe just hook it up and see if it throws a code....

Yes the sensor has two black and two white wires, but i still dont know which wires on the harness do what so i dont know how to connect them to the sensor

 

[andrewb_80]

I take that back....the sensor has 2 white wires, one black and one grey. Possibly....black=ground, grey=signal, and white is heater???