1994 GT / main harness issue for the o2 harness

[Shaynernb]

Hi all

If someone could help please ...., I just bought this 94 and am going through issues related to poor idle.
I replaced all of the sensors and was going to replace the o2 ‘s next when I noticed there was only 1.
The other one is capped at the header , that being said there is no harness visible for 2 sensors to run off. There is just one wire running to the existing o2 sensor .... very weird.
This One wire runs from under the dash ( haven’t traced its exact end point ).
Can you purchase the original wiring to connect to the o2 sensor wiring harness or am I screwed here

Thanks

 

[RaggedGT]

Here is a diagram of the o2 wiring-I’ll include the link to the very helpful website I borrowed the image from-

http://www.veryuseful.com/mustang/tech/engine/images/Mustang-94-95-CCRM-PCM-Transmission.gif
You may be able to buy an aftermarket/replacement harness,but I’m leaning more toward having to find a donor

 

[Shaynernb]

Thanks for the diagram ..., last night I found where these HEGO sensors are. Today I’ll confirm.