Universal o2 wireing

[ExtendedS15]

i have a 95 gst & i reciently installed a O2 sensor b/c my CEL was on for my after the cat sensor, had to replace it w/ a universal b/c previous owner had one on there, i dont know if it was wired up in the first place correctly (CEL came back on) so dose anyone know how the Bosch universal should be wired up color to color, wire colors on the car are 1 blue, 1 white, and 2 black, on sensor are 2 white, 1 grey, 1 black

 

[Jimmy Jr.]

Do you have a cat?

 

[ExtendedS15]

ya know i didnt really pay atention while i was lookin down there, i know it has HKS 2 1/2 exhaust but off the top of my head i dont know if it still has the cat or not, just qurious why do you ask?

 

[Jimmy Jr.]

Removal of the cat often leads to a CEL. Your o2 sensor is most likely in good working order.