Installation Manual
14 15
INSTALLATION
NOTICE - The wiring schematics are noted as recommendations by Tierra, please
consult your equipment manufacturers operation manuals for specic information
pertaining to wiring or use of the equipment’s battery as a power source.
WARNING - Before welding steel parts on the frame, disconnect the CM1X device as
hardware issues may occur.
WARNING - Do not apply external force on the harness and allow the cables to be
tension-free.
WARNING - The switched power wire (orange) should be connected to a source that is
only energized during the engine run cycle.
DO NOT CONNECT RED AND ORANGE WIRES TOGETHER.
If red and orange wires are connected to the same signal source, the Key OFF event
is not detected or reported and the device rmware will not function properly. This
connection can be sourced at the output run terminal of your vehicle’s alternator or other
sources that are only “hot” when the engine is running (mechanical hour meter, etc.). Use
a multimeter to verify that 9 to 36 volts are present only when the engine is ON. For both
switched power (orange) and constant power (red), the voltage range is the same.
CAUTION - Wiring a piece of heavy equipment up without using the above‐mentioned
method causes problems with inaccurate hours being reported into Tierra web. These
hours will not match the hour meter on the machine, thereby causing erroneous readings
due to the presence of a switched power signal when the engine is not running. This
could occur if wired to the ignition when the key switch is left ON. Due to the inability
to detect Key OFF, connecting red and orange to the same signal source is never
acceptable. IN ALL CASES, switched power wired to an engine run signal is the rst and
best practice.
NOTICE - Some vehicles, such as tractors or agricultural machines, have 3‐pin connectors
with ground, battery power, and switched power located inside the cabin. You can use
this connector to power an CM1X device. Both constant power and switched power
need to be fuse‐protected (5A fuse works ne). Install a 5A fuse onto the battery power
cable and another fuse onto the switched power cable if the circuit is not protected.
NOTICE - Use Ty‐wraps to keep hoses and wires secured to avoid possible wear
or pinch points.
NOTICE - Both switched power AND constant power MUST BE used to properly
power up the box.
INSTALLATION
CONNECTOR PINOUT
Pin # Signal Color Device Pin #
1 GND/Chassis Black/Grey 2 - 4
2 +15 Orange 3
3 CAN1_H (In5) Yellow 10
4 CAN1_L (In4) Green 9
5 Out0_LS Red/Black 13
6 RS232_Out Violet 17
7 RS232_In White 18
8 In0 Brown 5
9 CAN2_H (In7) Yellow/Red 12
10 CAN2_L (In6) Green/Red 11
11 In1 Light Blue 6
12 +30 Red 1
Pin # Signal Color Device Pin #
1 In2 Pink 7
2 In3 Blue 8
3 Out1_HS White/Red 14
4 Out2_LS White/Black 15
5 Out3_HS White/Green 16
6 - Dummy Pin -
LTE Diversity
GNSS
LTE