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1. Select a mounting location for the AIM2™ module. Recommended locations are under the dash
or under the seat on the same side of the vehicle as the fuel tank’s filler neck. The Analog Speed
Sensor Cable has five conductors: 1) RED (8 feet long) to +12 to +42 VDC fused and unswitched,
2) BLACK (2 feet long) to chassis ground, 3) GREEN (8 feet long) to positive odometer, 4)
WHITE (8 feet long) to negative odometer, and 5) BROWN (8 feet long) for wakeup/switched +4
to +42 VDC. Consider the distance from the AIM2™ Power/Speed Sensor Port to the required
connections when selecting a mounting location. Mount the AIM2™ module in the selected
location.
CAUTION
Some vehicles use more than one battery to increase system voltage, or
available starting current.
How the batteries are connected together will determine if the increase is in voltage or current. If the
same vehicle chassis ground to which the batteries are grounded is not used when wiring the ground
to the AIM2™ module, AIM2™ power will not match vehicle power and damage to the AIM2™
module and/or vehicle electrical system may occur. Always ground the AIM2™ module to the
same ground used by the batteries for the vehicle chassis ground.
NOTE
Installations in Canada require the use of two 12 gauge wires to ground the AIM2™ module to a
chassis ground.
2. Using 12 AWG THHN wire, make a ground connection between the AIM2™ ground connector
and the vehicle/equipment chassis.
CAUTION
To avoid possible damage to the AIM2™ module, do not connect the Analog Speed Sensor Cable to
the AIM2™ module until all other cable connections are complete.
NOTE
Important! Some applications may not function correctly unless the WHITE negative odometer wire
is connected directly to the negative side of the speed sensor.
3. Connect the Analog Speed Sensor Cable BLACK ground wire and WHITE negative odometer
wire to a chassis/battery ground.
CAUTION
If multiple batteries are in use in the vehicle being installed, take a voltage reading of the switched
and unswitched inputs of another existing vehicle accessory. Select power sources for AIM2™ which
have the same voltage inputs. Doing so may prevent damage to the AIM2™ module and/or the
vehicle electrical system.
4. Connect the Analog Speed Sensor RED wire to an unswitched (constant with ignition OFF) +12
to +42 VDC power supply.
5. Connect the Analog Speed Sensor BROWN wire to a switched (constant with ignition ON only)
+4 to +42 VDC power supply. This connection will “wakeup” the AIM2™ module when the ignition
switch is turned ON.
NOTE
On vehicles with Allison transmissions, DO NOT connect the Analog Speed Sensor Cable GREEN
wire to the transmission speed sensor. Connect the GREEN wire to the ECM speed sensing output.
6. Connect the Analog Speed Sensor Cable GREEN wire to the VSS (Vehicle Speed Sensor)
output. This signal may also be found at the vehicle’s computer module (ECM). Many speed
sensors have a two-wire connection. The output will be the wire with the higher resistance
reading.
7. The RFID Extension Cable must be routed from the AIM2™ module outside the passenger
compartment to the RFID Interface Module near the fuel tank filler neck. If possible use an
existing wire chase opening to route the RFID Extension Cable outside the passenger
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