Install wires for a AEM wideband

[montelibre]

I bought two AEM wideband O2 sensors (part number 30-5130, one for the cylinders 1-2-3 and other for the 4-5-6) and I will to try install, but I don't understand where to connect the white and brown wires.
I need hep with question.

[SilverXJ]

The wires are for external logging capabilities. For example, if you had an AEM FIC the the White wire would to the the FIC and the brown would be grounded. I don't fuilly understand the season for two wires though.

From the manual if you don't already have it.

WHITE – The WHITE wire should be connected to the Lambda + input on the
EMS or the analog + input on a similar device.
BROWN – The BROWN wire should be connected to the Lambda – input or the
analog – input. If the EMS or similar device does not have a – input, the BROWN wire
should be connected to a sensor ground. If no sensor ground is available, the BROWN
wire should be connected to a power ground. Note: The BROWN wire must be
connected in order to get correct readings from the analog output.