Heated O2 Sensor Wiring ???
Thread Starter
Race Director
Joined: Feb 1999
Posts: 19,659
Likes: 34
From: Lenoir City Tennessee
Ci 6, 8 & 10 Veteran
St. Jude Donor '05-'06-'07-'08-'09-'10-'11-'12-'13-'14-'15
Heated O2 Sensor Wiring ???
Quick question about how to wire up the O2 sensors. This is in my 70 LS swap. I am putting rear O2 sensors in my front locations. I want to be sure I have everything setup correctly.
Which wires are what on the rear corvette O2 sensors? I know one of the wires is a sensor wire, one has 12 volts on it and one has to be ground. I need to know which wire is what on these sensors.
Thanks for any help.
Which wires are what on the rear corvette O2 sensors? I know one of the wires is a sensor wire, one has 12 volts on it and one has to be ground. I need to know which wire is what on these sensors.
Thanks for any help.
Thread Starter
Race Director
Joined: Feb 1999
Posts: 19,659
Likes: 34
From: Lenoir City Tennessee
Ci 6, 8 & 10 Veteran
St. Jude Donor '05-'06-'07-'08-'09-'10-'11-'12-'13-'14-'15
Thanks Patches that helps some. Looks like the new Bosch 13111 sensors are a little different to me.
On my harness, it came from a camaro, has only slightly different colors in the plugs.
Passengers side plug.
A=Tan
B=Purple
C= Black
D=Pink
Driver side plug
A=Tan
B=Purlple/white
C=Black
D=Pink
A and B are sensor. C is ground and D is voltage. All good so far.
The Bosch 13111's are like this.
A=Grey
B=Black
C=White
D=White
Looks to me like the white wires are the sensor wires on the O2's. The black should be ground and the grey should be 12 volts.
If this is so, then plugging the 13111's into my harness is not going to make them work. Agree?
I wonder if it is possible to repin the O2's to match the harness?
On my harness, it came from a camaro, has only slightly different colors in the plugs.
Passengers side plug.
A=Tan
B=Purple
C= Black
D=Pink
Driver side plug
A=Tan
B=Purlple/white
C=Black
D=Pink
A and B are sensor. C is ground and D is voltage. All good so far.
The Bosch 13111's are like this.
A=Grey
B=Black
C=White
D=White
Looks to me like the white wires are the sensor wires on the O2's. The black should be ground and the grey should be 12 volts.
If this is so, then plugging the 13111's into my harness is not going to make them work. Agree?
I wonder if it is possible to repin the O2's to match the harness?
Thread Starter
Race Director
Joined: Feb 1999
Posts: 19,659
Likes: 34
From: Lenoir City Tennessee
Ci 6, 8 & 10 Veteran
St. Jude Donor '05-'06-'07-'08-'09-'10-'11-'12-'13-'14-'15
This is a conversion car. I have put an 02 Camaro SS LS1 and harness into my 70 vette. It has headers. I was reading and everyone with headers is using rear O2 sensors because they have a better heating element in them and should keep the slow switching codes at bay.
For some reason, I thought since I was putting a new motor in I should get a cam, headers, heads, etc... just so it would sound nice and mean. I got that for sure.
If I could have just left well enough alone and dropped the stock LS motor in there and enjoyed it, I would be wanting to do something else to it. I will get it though. I do have HP Tuners and am not afraid to do anything to this car. I have touched every nut and bolt at least once on it. The only thing I have not done myself is the paint.
For some reason, I thought since I was putting a new motor in I should get a cam, headers, heads, etc... just so it would sound nice and mean. I got that for sure.
If I could have just left well enough alone and dropped the stock LS motor in there and enjoyed it, I would be wanting to do something else to it. I will get it though. I do have HP Tuners and am not afraid to do anything to this car. I have touched every nut and bolt at least once on it. The only thing I have not done myself is the paint.
Thread Starter
Race Director
Joined: Feb 1999
Posts: 19,659
Likes: 34
From: Lenoir City Tennessee
Ci 6, 8 & 10 Veteran
St. Jude Donor '05-'06-'07-'08-'09-'10-'11-'12-'13-'14-'15
Now I am wondering, since this is a Camaro harness, are the pins layed out differently?
Thread Starter
Race Director
Joined: Feb 1999
Posts: 19,659
Likes: 34
From: Lenoir City Tennessee
Ci 6, 8 & 10 Veteran
St. Jude Donor '05-'06-'07-'08-'09-'10-'11-'12-'13-'14-'15
Those colors match what I am seeing in my harness. C and D are the heater as I thought.
What confuses me is both sensors will read to the O2 on the A terminal.
I plugged them in as they are and left the key on and watched the display on HP Tuners. The voltage on both stayed very similar. I slid under the car and you could feel them both getting warm.
I am still not sure I understand the wiring.
Just for comparison, I did look at an old Delco O2 sensor and the colors were
A=Tan
B=Purple
C=Brown
D=Brown
What confuses me is both sensors will read to the O2 on the A terminal.
I plugged them in as they are and left the key on and watched the display on HP Tuners. The voltage on both stayed very similar. I slid under the car and you could feel them both getting warm.
I am still not sure I understand the wiring.
Just for comparison, I did look at an old Delco O2 sensor and the colors were
A=Tan
B=Purple
C=Brown
D=Brown
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Thread Starter
Race Director
Joined: Feb 1999
Posts: 19,659
Likes: 34
From: Lenoir City Tennessee
Ci 6, 8 & 10 Veteran
St. Jude Donor '05-'06-'07-'08-'09-'10-'11-'12-'13-'14-'15
Thanks for your help.
I have one more question for you, where are you coming up with your diagrams? Do you have this on a disc? Is this the one I see every now and then for sale in the C5 section? If so I need to pick me one of those up.
I have one more question for you, where are you coming up with your diagrams? Do you have this on a disc? Is this the one I see every now and then for sale in the C5 section? If so I need to pick me one of those up.
