o2 sensor signal wire

[byrd35us]

I am trying to install a air/fuel ratio gauge but cant seem to find which color the o2 sensor signal wire is any help would be soooo much appreciated.
thanks

[REXRENEGADE]

I think it's the violet colored wire.

This link may help -
http://hp.autometer.com/instruction_download/instructions/837j.pdf

[byrd35us]

i need to know what color the wire is on the o2 sensor. But i will look under the truck and see if there is a violet wire

[byrd35us]

found it its the black wire, search the forum and found where Terry had answered that question for another trying to hook up an air/fuel gauge.

thanks

[Sandman]

I found a place where they sale a pigtail for the o2 sensor so you didn't have to tap directly into the wiring. I'll try to find it when I get home.

[L8 APEX]

Do yourself a favor and solder it on the harness side of the O2 not the sensor side. So when you need to replace a O2 or drop the exhaust you won't have to cut your wire:tu:

[Sandman]

http://www.ls1speed.com/catagory.cfm?catagory=pcm

Scroll to the bottom of the page and there is an Air/Fuel Pigtail Tap for ford vehicles.