Ok, I bought the haltech O2 sensor from rx7.com a while back, b/c they told me that it would fit my na and the stock computer would use it just fine, and i was sick of the discount auto parts sensors dieing shortly after putting them in...

anyway, the O2 sensor did not come iwth a wiring diagram, so I thouight mabye someone could help me out. the sensor has a 3 female connectors, labled A, B and C.

A has a dark brown wire going into it

B has a light brown wire, and a dark brown wire going into it

C has a purple wire going into it

I figure one of these is power, ground and then teh O2 reading. Im just tring to wire it up, so i was wondering if someon could point me in the right direction as to which is which,

Thanks!!

Jordon

 

The purple is O2 reading. I dont think any of those is ground. If you think about it, it is already grounded by being in the pipe. I say 1 is ECU signal, the other is power. I could be completely wrong. Purple is O2 gauge though.