AEM 30-2906-0 AQ-1 Mini Harness User Manual
Page 4
Page 4 10-2906-0 AQ1 Harness Instructions RevA 110707.doc
Digital 1-3 are switched to ground digital inputs, 16.5 V MAX tolerance.
Examples: Clutch/brake/cooling fan ground switch, nitrous solenoid ground or ground
switch input to start/stop Logger (Ground activated input). Figure 3 below shows wiring
diagrams for an on/off activation switch and a nitrous solenoid. The corresponding
wires in the harness for Digital 1-3 are Brown and are labeled SW 1, SW 2, and SW 3.
SENSOR POWER
The AQ1 Data Logger has an internal low current 5 volt power supply that is used for
powering sensors that require a 5 volt excitation. The corresponding wires in the
harness are Red and are labeled 5 VOLTS.
SENSOR GROUND
The AQ1 Data Logger also has an internal low current sensor ground that is used for
sensors that require a signal ground. The corresponding wires in the harness are Black
and are labeled SIG GND.
Figure 2. Engine RPM Signal From CDI
Figure 3. Activation Switch (Left) and Nitrous Solenoid (Right) Connections
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