EVOscan Help Datalogging AEM wideband

[send_er_lar69]

Hey guys, hopefully a simple question for someone running a black box ecu on a 98 gst, currently have a aem wideband gauge trying to figure out how to get wideband to log before getting it tuned. Off of the wideband is a white wire I was told I could run to pin 75 on my ecu which is the rear o2 but unfortunately the white wire is already running to a pin a couple spots up so I’m not able to run that wire to the rear o2, any suggestions on how this is doable? I’ll attach a photo of the wire going to the ecu and you can see in the photo the wire that previous owner had already cut which is for the rear o2. The white wire above the cut one with the red butt connector is where my white wideband wire is currently going too.

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[steve]

Did someone perhaps use the old rear wiring to connect up the sensor to the controller?

I don't have an AEM WB but it seems that the white output wire from the controller that provides the 0-5v WB output signal is what you would connect to the ECU pin. The brown output would go to the ECU ground.

Once you get it wired the trick is going to be getting EVOscan to display it in a usable form.