411 swap

[gopher]

I am doing the 411 swap , 2000 s 10 4.3 v6 I have the pin out to do the swap.
my question is in the wiring harnass I have right and left o 2 sensors connectors for the front
one is a four wire and the other has six wires. when I odered the o2 senors they both have four wires and show to be the same number for both.

on the six wire connector

pupple/white wire goes to c1 blue 68
the tan/white goes to c1 blue 25
the pink is hot 12v
black gr.
puppl goes to c1 blue 66


what am I missing ?
thnks gopher

[Lextech]

I have done quite a bit of 0411 related things. I don't think you will use C1-25 Tan/Wht wire. Make a note of it and just tape it back into the harness. Set the tune for only the two front O2 Sensors. I am not stating this as fact----But, I really don't think that one is used. If I remember correctly the 2000 V-6 S-Trucks have 3 O2 sensors and when doing the 0411 swap the 2001 or 2002 Calibration doesn't have the ability to use 3 O2 Sensors.

Jeff

[EagleMark]

SO what is a six wire O2 sensor for and or do?

[Lextech]

SO what is a six wire O2 sensor for and or do?

I have never seen or heard of such a thing.

Jeff

[gopher]

Thanks Jeff for your reply
I have pulled some wires from this stock harness. I now have two o2 sensors connectors left.
one is a four pin the other is a six pin. the wires in the left connector all line up o2 pins at ecm.
the right side six pin connector wires all line up with o2 pin at ecm
i know that this harness for 2000 s 10 4.3 v6 with three o2 sensors. am i missing a connector that may y off of this connector and goes to both sensors, one going to the rear sensor? yes i am just going to use two front sensors.
i do want to Thank you again for the pin out sheet.

Thanks for your help
gopher

[EagleMark]

Looking up an O2 sensor for your application shows one sensor fits right, left and downstream. All the same four wire plug... not really sure where this six pin connector comes into play?

Wheres the other 2 wires go?