Device: GS-364e (LMU-3640)
Application: On-road vehicles and equipment
Power Source: OEM diagnostic port (via harness)
Ingress Protection Rating:Not IP67 (interior installation only)
Reporting Frequency:Every 1 minute
Reporting Verification: FleetWatcher mobile app
1 Purpose
This guide provides step-by-step instructions for installing and verifying the LMU-364 on-road tracking device to ensure proper mounting, reliable GPS performance, and successful reporting.
2 Pre-Installation Inspection
Remove the LMU-364 device from its packaging.
Inspect the device for any visible damage.
Do not install the device if damage is present.
Verify you have the correct harness for the vehicle or equipment.
The LMU-364 may ship with different harnesses depending on application.
Confirm the harness includes a diagnostic splitter.
3 Accessing the Installation Area
Remove the necessary dashboard panels.
This provides clear visibility and access to the diagnostic port and mounting area.
Identify a suitable location under the dash where the device can be mounted securely and out of sight.
4 Diagnostic Port Integration
Locate the OEM diagnostic port.
Remove the diagnostic port from its mounting bracket.
The port may be secured using:
Multiple small screws or bolts, or
A single retaining nut
Once removed:
Connect one side of the provided harness to the OEM diagnostic port.
Use the opposite side of the harness as the new diagnostic port.
Mount the new diagnostic port back into the original mounting bracket location.
This maintains full diagnostic access for future service.
5 Device Connection & Placement
Connect the LMU-364 device to the remaining end of the harness.
Route the device as high under the dashboard as possible.
Mounting Location Guidance
Do not mount the device under the steering column.
This may restrict GPS signal and delay satellite acquisition.Recommended location:
Directly under the top of the dashboard.Provides a clear view of the sky through the windshield
Keeps the device hidden from view
Important: The LMU-364 is not IP67 rated and must be installed inside the vehicle, protected from moisture and environmental exposure.
6 Initial Power-On & Device Verification
Start the vehicle or equipment.
Allow it to run for 10–15 minutes.
This allows the device to:
Check for and apply updates
Acquire GPS satellites
Verify the device LED indicators.
Orange LED: Solid
Green LED: Solid
Note: These LED indicators are located next to where the harness plugs into the device.
7 Reporting Verification
With the equipment running, open the mobile app.
Use Verify GPS Device to confirm the device is communicating.
Confirm the following events appear:
Engine Running packet
Shut off the equipment.
Confirm an Engine Stop Running packet appears in the app.
8 Final Mounting & Cleanup
Once all verification steps are complete, mount the LMU-364 device securely in the selected under-dash location.
Secure the harness using zip ties to prevent:
Excess movement
Pinching
Kinking
Route wiring along a clear path away from sharp edges and moving parts.
Reinstall all dashboard panels carefully.
Perform a final visual check to ensure:
Wiring is secure
The device is hidden and firmly mounted
Installation Complete
The LMU-364 is now installed and reporting every 1 minute.
Perform a final check in the mobile app to confirm the device is associated with the correct vehicle and displaying accurate status.