Post Cat O2 Sensor mix up

Hi everyone,

I'm new to this site and this is my first post. Anyway, I recently replaced my Catalytic converter on my 1998 328i and in the rush to get the Cat installed I forgot to note which connectors were connected each O2 sensor. I know the post cats are used for emission purposes only but I would like to have then connected to the correct connector on the drivers side of the car. Does anyone know where I can get that information? The Bently manual and the dealership weren’t helpful. Go figure.
Also, I was wondering if anyone knows where you can get a diagram of the relays for my car. In my car none of the relays are labeled(with the exception of the ABS) and all the relay diagrams I have seen are different from what is in my car.
Thanks for the help…

i recently replaced both of my O2 sensors after the cat and i connected them in the wrong connectors and my idle constantly bounced from about 500 to 700 RPM it was very noticeable than i switched them around and everything was fine.

so its not that big of a deal to just guess