AEM 30-4110 Digital Wideband UEGO Gauge - Manual (Page 4)

Page 4
Each AEM UEGO sensor is individually calibrated and a resistor integral at the
connector body is laser trimmed with this value. This process replaces the “free air”
calibration procedure required by some manufacturers when changing sensors and
implements a sensor specific calibration for unparalleled accuracy. (Figure 2)
Figure 2. The connector module contains a laser trimmed calibration resistor,
which defines the characteristic of the sensor.
INSTALLATION
Disconnect the negative (-) battery cable. There are two harnesses that connect to the
back of the AEM UEGO gauge. The longer harness connects to the UEGO sensor.
The shorter harness contains four leads. The red and black leads must be connected in
order for the gauge to function. Connection of the white and blue wires is optional.
Connect the wires as shown below. (Figure 3) The harness ends with the four and six
pin connectors connect to the back of the gauge. When looking at the back of the
gauge as shown below, the six-pin connector connects on the left side and the four pin
on the right side. The locating tabs on the four and six pin connectors should be facing
up. (Figure 4)
Figure 3. Gauge Installation Connections