AEM 30-2906-96 AQ-1 96 Flying Lead Wiring Harness - Manual (Page 4)

Page 4 10-2906-96 AQ1 Harness Instructions RevA 110906.doc
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.
RS 232
The RS232 serial input on the AQ1 Data Logger is configurable to read either a
standard NMEA GPS data stream or the data stream from an AEM EMS. See “Using
the AQ1 Data Logger” for more information on configuring the RS232 input. The AQ1
Data Logger harness comes with a male DB9 connector. When connecting to an AEM
EMS, the male DB9 connector plugs directly into the mating connector on the back of
the AEM EMS. The pinout for a GPS connection is shown below in Figure 4. AEM
recommends using one of the Garmin GPS models listed below.
Garmin GPS 18x PC – 1 Hz model with DB9 connector and 12 volt power adapter
Garmin GPS18x 5Hz- 5 Hz OEM model, some wiring required.
Figure 3. Activation Switch (Left) and Nitrous Solenoid (Right) Connections