AEM 30-2310 Inline Wideband UEGO Controller - Manual (Page 2)

Page 2
RED - Connect to a switched, fused (5A) 12 volt power source.
BLACK – Connect to a clean power ground.
WHITE - Connect to Lambda + Input.
BROWN - Connect to sensor ground. Connect to power ground if sensor ground is not
available.
*GREY – Connect to RS232 serial port on laptop/pc. See section on Serial Data
Viewing
*optional – only needed for laptop/pc viewing of data.
UEGO Sensor Mounting
A weld-in UEGO bung is supplied for sensor installation. Mount the UEGO sensor in the
exhaust system at least 18 inches downstream from the exhaust port. If you anticipate
high EGT's (over 800C), run a turbocharger, run at high RPM for extended periods of
time or plan on running leaded race fuel then you must mount the sensor at least 36
inches or more downstream of the exhaust port as all of these can cause the sensor to
overheat. On turbocharged engines the UEGO sensor must be installed after the
turbo charger, if not, the pressure differential will greatly affect the accuracy of
the unit. For accurate readings, the sensor must be mounted before catalytic
converters and/or auxiliary air pumps. To prevent collection of liquids between the
sensor housing and sensor element during the cold start phase, the installation angle
should be inclined at least 10° from horizontal with the electrical connection upwards,
see Figure 2.
>10°
Figure 2. Minimum mounting angle for the UEGO Sensor
Controller Mounting
The UEGO controller provides for quick and easy mounting with the supplied zip ties.
See Figure 3 below.