Installation guide: CalAmp LMU-3640 | 3-wire (Fleet) - for SA Water

Time required: 30-60 minutes

This guide explains how to install a CalAmp LMU-3640 device using 3-wire power connections. It is intended for SA Water installations on the Fleet platform.

In this guide:
Step 1: Position the vehicle
Step 2: Gather your tools
Step 3: Check the kit contents
Step 4: Identify the device parts
Step 5: Record the device ESN
Step 6: Identify the harness parts
Step 7: Find a suitable location to mount the device and modem
Step 8: Make the 3-wire connections
Step 9: Connect the harness to the device
Step 10: Connect optional peripherals
Step 11: Use the LED lights to identify the device status
Step 12: Route the cables and secure the device and modem
Step 13: Verify operation
Step 14: Enable and configure hardware

Step 1: Position the vehicle

Position the vehicle in a location that has good network coverage.

The engine must be off when you are installing the device.

Step 2: Gather your tools

Depending on the vehicle type, you may need the following tools:

• Dash panel removal tools
• Wire stripping tools
• Digital multimeter
• Cordless drill
• General purpose screwdriver bit set
• Sockets (standard/metric)
• Work light and a mini-torch

You may also need:

• Add-A-Circuit fuse adapters
• Electrical tape - Super 33+ grade or better
• Heat shrink ring terminals and butt connectors
• Self-tapping screws
• Zip ties

Step 3: Check the kit contents

• CalAmp LMU-3640 device (further detail in Step 4)
• 24-pin harness with 3-wire connections (further detail in Step 6)
• Iridium SGIR-004 modem
• Data cable (to connect the Iridium modem to the CalAmp device)
• Satellite antenna and cable
• Rollover switch with D7E-3 tilt sensor
• Panic button equipment
• Privacy button
• Driver ID equipment

Iridium modem

Data cable

Satellite antenna and cable

Rollover switch

Panic button equipment

Privacy button

Driver ID equipment

Installation overview diagram

Step 4: Identify the device parts

(A) Information label
(B) Device Equipment Serial Number (ESN)
(C) Fastening tabs

*(D) Blue LED to indicate Bluetooth connection (Fleet platform only)
*(E) Amber LED to indicate cellular network signal
*(F) Red LED to indicate diagnostics connection (diagnostics equipped devices on Reveal platform only)
*(G) Green LED to indicate GPS signal
(H) 14-pin diagnostics connector plug
(I) 24-pin I/O connector plug

*Refer to CalAmp 36xx - Reveal and Fleet LED indicator light patterns.

Step 5: Record the device ESN

Record the device's Equipment Serial Number (ESN). You will need it later to link and verify the installation.
The device ESN is on the device’s information label (see Step 4 above).

Step 6: Identify the harness parts

(A) 24-pin plug (connects to CalAmp device)
(B) Black wire (spare ground wire)
(C) Connectors for optional peripherals (refer to Step 10 below)
(D) Wires for 3-wire power (refer to Step 8 below)
(E) Wires for sensor inputs (refer to Sensor inputs below)
All fuses are 3 amp.

For more details, see CalAmp 36xx I/O Accessory Harness descriptions and wiring diagram.

Step 7: Find a suitable location to mount the device and modem

Find a suitable location to mount the device and modem. Suggested mounting locations are shown below.

Behind the instrument cluster (A)
Behind the center console (B)
Behind the glove box (C)

Consider the following when choosing the mounting location:

• Network coverage at the mounting location:
  • The device should be mounted label-side up and skyward-facing.
  • The device should not be mounted directly under large metal parts.
    The device will work through glass, plastic and composites.
• Space at the mounting location:
  • There should be ample space for you to secure the device firmly with zip ties.
  • The mounted device must not obstruct the operation of the vehicle.
• Possibility of damage to the device or cables:
  • Avoid heat sources (for example, a heating vent or duct).
  • Avoid sharp surfaces.

Step 8: Make the 3-wire connections

1. Familiarize yourself with approved methods for making 3-wire connections:
   For information about butt connectors, posi-tap and add-a-circuit fuse block adapters: see Verizon Connect Installation and electrical connection policy guidance.
   For information about poke-and-wrap: see FAQ: How to make a poke and wrap connection (solderless splice)
   The image below shows a connection made using the poke-and-wrap method.
   
2. On the harness, identify the wires for 3-wire power. 
   
   (D1) Black wire (connects to ground)
   (D2) Red wire (connects to power)
   (D3) White wire (connects to ignition)
3. Connect the red wire to a constant power (batt+) source.
4. Connect the white wire to a true ignition source such as the ignition switch, factory spare wire connectors labeled for such use, or the fuse box.
   Use a digital multimeter to verify the voltage doesn't drop below 9 VDC while the engine is cranking.
5. Connect the black wire to ground.
   On light-duty vehicles, terminate the ground wire to the chassis using a ring terminal and self-tapping screw, a factory-marked grounding bolt, or a factory-marked spare wire labeled for such use.
   
   On heavy-duty vehicles, connect the ground wire to a factory-marked spare ground wire or grounding point labeled for such use.
   On heavy-duty vehicles do not make a chassis ground using a ring terminal and self-tapping screw. Recent models typically have the chassis and frame separated, and this can cause electrical issues for a chassis ground.

Step 9: Connect the harness to the device

Plug the 24-pin harness connector into the CalAmp LMU-3640 device.

Step 10: Connect optional peripherals

This step is only for installations that have optional peripherals or sensor inputs.

1. On the harness, identify the connectors for optional peripherals.
   
   (C1) Serial 2 connector plug (connects to Iridium modem)
   (C2) LED connector plug
   (C3) Switch LED connector plug (connects to panic button)
   (C4) Serial 1 connector plug (connects to Garmin)
   (C5) 1-Bit bus connector (connects to Driver ID reader)
   (C6) Driver ID buzzer connector plug
2. Connect the peripherals harness to the corresponding Molex connector. Refer to the following installation details along with the Sensor inputs section below:
   1. Section Installing the antenna and connecting the modem
   2. Section Installing the rollover switch
   3. Section Installing the panic button
      There is a separate privacy button (for SA Water installations, Verizon Connect’s standard Panic/privacy button only has the panic feature).
   4. Section Installing the privacy button
   5. Section Installing the Driver ID

Installing the antenna and connecting the modem

1. Mount the satellite antenna on the vehicle roof using 3M double-sided tape. 
   The satellite antenna must be mounted on the exterior of the vehicle and face straight up to the sky without any obstructions
2. Run the cable to the Iridium modem. A hole may be required to run the cable.
   Where possible, run the cable through existing cabin grommets taking care to conceal it (for example, under sill guards).
   Seal any holes with 100% silicone to prevent water ingress.
   It is important not to compromise the vehicle's watertightness.
3. Connect one end of the cable to the antenna, and cover the connection using heat shrink tubing.
   
   It is important to cover the antenna cable connections. 
4. Connect the cable's other end to the modem, and cover the connection using heat shrink tubing.
   
5. Connect the data cable's 9-pin plug to the modem's 9-pin socket.
   
   
   
6. Plug the harness's Serial 2 connector plug (C1) into the data cable. 
    
   
   The device and modem are now connected. 
   

Installing the rollover switch

The rollover switch has a D7E-3 tilt sensor. The switch is NC (normally-closed) when level, and open circuit when tilted. When the sensor tilts 50 to 80 degrees, the circuit opens.

The image shows the wiring diagram for the rollover switch.

1. Mount the rollover switch on the vehicle and secure it in place with two M3 screws.
   If using screws is not feasible, you can use double-sided tape and zip ties instead.
   It is very important that the rollover switch is level and firmly secured.
2. Connect one rollover switch terminal (X) to the harness's blue wire (E1).
3. Connect the other rollover switch terminal (Y) to ground.
   
   (X) Connects to blue wire (E1) on harness
   (Y) Connects to ground

Installing the panic button

There is a separate privacy button (for SA Water installations, Verizon Connect’s standard Panic/privacy button only has the panic feature).

(A) Panic/privacy button with LED
(B) Lock nut and washer
(C) Cable
(D) Connector (connects to CalAmp LMU-3640 device)

The following diagram shows the connection details.

Plug the panic button connector into the 4-pin molex connector (C3) on the harness.

For further details, see Installation guide: Panic/privacy button.

Installing the privacy button

1. Mount the privacy button on the vehicle and secure it in place.
2. Connect one privacy button terminal (P) to the harness’s blue/orange wire (E2).
3. Connect the other privacy button terminal (Q) to ground.
   
   (P) Connects to blue/orange wire (E2) on harness
   (Q) Connects to ground

Installing the Driver ID

(A) Key fob
(B) Key fob reader, connects to harness connector (C5)
(C) Buzzer, connects to harness plug (C6)

Take care not to lose included washers.

1. Verify the mounting location with the customer and advise that the installation will require a 3/8" hole to be drilled.
2. Verify there is sufficient space behind the installation area.
3. Drill the 3/8" hole.
4. Run the reader cable through the hole.
5. Slide the plastic washer and star washer all the way up the cable to secure the reader to the mounting surface.
   The star washer is sharp. Take care not to cut any wire with the star washer.
6. Connect the reader cable to the harness connector (C5).
7. Plug the harness plug (C6) into the buzzer.
8. Secure the buzzer to the harness with zip ties.

For further details, see Installation guide: Driver ID. 

Sensor inputs

Inputs require a minimum voltage transition of ±6 volts up to 30 volts maximum.
Inputs should switch between negative and positive, or negative and open polarity unless otherwise directed. A 5 pin SPDT relay may be required for sensor input installation.

1. On the harness, identify the wires for sensor inputs.
   
   (E1) Blue wire (connects to terminal (X) on rollover switch)
   (E2) Blue/orange wire (connects to terminal (P) on privacy button
   (E3) Purple wire
   (E4) Gray wire
   (E5) Pink wire
2. On the 24-pin connector (A), identify the pins for the sensor inputs.
   
   (A1) Input 1: Pin 1 (blue wire), Fleet: negative (-) trigger, connects to rollover switch         
   (A2) Input 2: Pin 2 (blue/orange wire), negative (-) trigger, connects to privacy button
   (A3) Input 3: Pin 3 (purple wire), negative (-) trigger, goes to Switch LED Molex connector
   (A4) Input 4: Pin 4 (gray wire), negative (-) trigger
   (A5) Input 5: Pin 5 (pink wire), negative (-) trigger
   (A6) Input 6: Pin 6 (black/red wire), negative (-) trigger

Inputs do not require the 3 wire leads to be installed.

For more details, see CalAmp 36xx I/O Accessory Harness descriptions and wiring diagram.

Step 11: Use the LED lights to identify the device status

1. Start the vehicle and use the LED lights to identify device status.
2. Refer to CalAmp 36xx - Reveal and Fleet LED indicator light patterns for further details.
   The LED light patterns are different for Reveal and Fleet installations.

Step 12: Route the cables and secure the device and modem

1. Put the device and modem in place at the mounting location.
2. Fasten the device securely to a stable mounting bracket or wire bundle using zip ties.
   You can pass the zip ties through the fastening tabs on the sides of the device.
   You must fasten the device securely so it cannot move around. If the device is not secure, the accuracy of harsh driving event reporting will be reduced.
3. Fasten the modem securely in place using zip ties, velcro or double-sided tape.  
4. Route the cables to the mounting location.
   Coil and secure any loose cabling using zip ties to ensure it will not interfere with the driver or normal operation of the vehicle.
   
5. Check everything is fastened tightly, and trim zip ties if they have excess length.
   Use extreme caution when trimming the zip ties. Accidentally cutting or nicking nearby vehicle wires will cause performance issues with the vehicle.

Check the installation does not interfere with the driver or normal operation of the vehicle.
If you have removed the dash panel, do not replace it until the network connection is confirmed
(see Step 13).

Step 13: Verify operation

For Fleet

Verizon Connect Installation Partners should use the Fleet Hardware Installer app, Installer Portal or call the Fleet Technician Support line at (877) 943-7306 to link devices to vehicles and verify successful installations.
Customers and their internally managed technicians should use the Installer Portal or the customer's Fleet portal steps to link and verify successful installations.

Step 14: Enable and configure hardware

Installed accessory hardware must be enabled and have its parameters set via configuration file updates. Installers should do this by calling Support.

For example:

• A Driver ID and buzzer must be enabled and have parameters set for the buzzer's grace period and timeout settings.
• Installations that use a 3-wire (hard wired) power connection must have white wire ignition detection enabled via a configuration file update.

Disclaimer

Verizon Connect shall have no liability whatsoever for any damages that arise from, or are connected with, your use of our services, including the GPS tracking hardware and dash cams, in a manner contrary to the(se) instructions or in violation of law and/or our agreement. Tracking hardware connected to the diagnostic port in any vehicle that has third-party devices also connected to the diagnostic port can cause interference or loss of functionality of the third-party device. These third-party devices include, but are not limited to, wheelchair lifts, lifesaving equipment, emergency lighting, and radar guns. If such a conflict exists, contact Verizon Connect support to have the tracking hardware configured to support the third-party device. Failure to do so relieves Verizon Connect of all liability for damages that arise from or are connected with your use of the devices. Installed devices may only be removed and transferred to another vehicle if the second vehicle has been tested for compatibility, as per the(se) instructions. Transfers between vehicles which do not follow the(se) instructions will void any and all warranties from Verizon Connect, and relieve Verizon Connect of all liability for damages that arise from or are connected with your use of the devices.