Hi all
Have a problem have a AEM Air Fuel ratio gauge I have in my car but it doesn't run.
Sometimes I have 3 dashes or sometimes I have only 14,8 reading.
I have a new O2 sensor installed

Installation of the gauge:
You have the black red cable and so on and you have a connector for the O2 sensor.
The O2 sensor has stock a cable connected..don't know where this cable goes. But can I only change the connector to the gauge connector and leave the stock cable empty?
thanks for your answers