GV628W GPS Tracker Installation Guide

This is an installation and wiring guide for installing the GV628W GPS Tracking Device in your car or truck. If you came across this page as you were looking to install a different tracker and this isn’t the one you need, check out our full listing of GPS Tracking Device Installation Guides

Step 0 – GV628W GPS Tracker Installation Guide

We’ve included all this information in a handy, printable GV628W GPS Tracker installation guide

Step 1 – Determine Mounting Location

use posi tap for gps trackers

Install GPS Trackers with posi-tap connectors

The GV628W Tracker Unit should be mounted near an external power source, or in the case of temperature tracking, within the reefer fairing.
View of the Sky
Since the GPS satellites beam location information to the device, it needs to have a view of the sky. The GPS signal can penetrate glass, plastic, and wood, but not metal. Here are some suggested locations:
  • BEST – Behind a plastic barrier and or glass, shielded from the weather and hidden from view.
  • GOOD – Mounted in an open area with direct access to the sky.
  • FAIR – Hidden with an indirect view of the sky.
OPTIONAL Temperature Probe(s)
A single probe will usually be located near the return air duct of the refrigeration system. The silver tip of the temperature probe is the sensor. It should be exposed directly to the air being monitored. Do not cover the sensor, or mount the sensor directly to an exterior wall. Excess wire should be coiled (DO NOT cut). Cables should be secured along the run with clamps or cable ties.

Step 2 – Terminate Electrical Connections

We recommend soldering all electrical connections. If that is not possible, appropriate sized wire tap connectors (posi-tap.com) like the ones pictured here should be used. Do not jam wires between fuse and fuse holder.

Description of GV628W GPS Tracker Power Cable

Description of GV628W GPS Tracker Power Cable

Primary Device Wires – There are five wires that need to be connected to an external power source: RED, RED/GREEN, 2 Black, White

RED is Main power which goes to a constant power connection with a voltage between +12V and +24V. (Blue wire on trailers, constant battery circuits on other applications)
RED/GREEN is backup power which goes to a constant power connection with a voltage between +12V and +24V. (Trailer Clearance or Parking Lights wire on Trailers, a different constant battery circuit in other applications). If no alternate power is available, connect to the same source as RED Main wire.
Two Black
Two BLACK wires go to chassis ground [Battery(-)] using a ring connector or are tapped into an existing ground wire.
WHITE is for system run detection. For Reefers, connect to a circuit that is active only when the refrigeration system is in the RUN position. For Other Vehicles connect to a circuit that is on when the engine is running (Key ON). For nonpowered Trailers, connect to a circuit that receives power when the tow vehicle is connected. This circuit should be between +12V and +24V when active, and +0V (or Open) when inactive (see the diagram on the next page).
Optional Device Wires
Temperature Probe Equipped Units, connect the GRAY Tracker wire to the YELLOW wire(s) on the Temperature Probe(s) and connect the BLACK/WHITE STRIPE Tracker Wire to both the Red and Green wires of the temperature probe(s). The other Tracker wires are for optional I/O sensors that incur additional monthly charges. Tape or heat-shrink insulate the ends if not in use.

Proper connection of the RED, BLACK, and WHITE wires is essential for the device to operate

Test and Secure the Tracking Device

As soon as the GV628W has been connected to power, the LED lights located in the white strip on the side of the device will begin to blink. The Power LED will appear first, followed by the GSM LED, and last, the GPS LED. If the device is being powered up for the first time, the GPS LED may take a number of minutes to appear. When testing, make sure the device is outside, away from buildings and trees with the Label pointing toward the sky or horizon. After the GPS LED displays a solid light, turn the refrigeration system ON. Check that the unit is reporting Temperature and RUN/Off properly by going to the nimbleGPS tracking website and running a Temperature History report. The default unit name will correspond to the last 5 or 6 digits of the IMEI dispalyed on the barcode label of the device. See the table below to determine the status of the GPS device and to help troubleshoot if it is not reporting.

GV628 GPS Tracker Temperature Probe Information

GV628 GPS Tracker Temperature Probe Information

Once it is confirmed that the device is reporting properly, securely mount it in the location chosen in Step One with the label facing the sky or Open Outside Space. There are several recommended mounting methods. The best method is to screw or bolt it to a suitable surface. Another method is to use high quality nylon zip ties around the device within the grooves. Finally, you can place a piece of double-sided tape in the middle of the bottom of the device and dab silicone glue or 3M Marine 5200 adhesive to the four bottom corners of the device. The double-sided tape will serve to hold the device in place while the glue dries.

CAUTION The use of excessive amounts of adhesive may make it impossible to remove the device from its mounting location. If the device has been glued to a substrate and needs to be removed later on, use small gage piano wire and a back and forth sawing motion to cut through the glue between the device and substrate.

The third option is to secure the device with a screw or bolt through the mounting tab at the top of the device. A zip tie can be placed around the bottom section for additional security.

GPS Tracking Device LED Status Lights

The Durable 628W GPS Tracker
The Durable 628W GPS Tracker
LED Device Status LED Status
GSM Device is searching CELL Network Fast Flashing
GSM Tracking Device has registered to CELL Network Slow Flashing
GSM Device entered into sleep mode OFF
GSM SIM card needs PIN code to unlock ON
GPS GPS chip is powered off OFF
GPS GPS sends no data or data format error Slow Flashing
GPS GPS chip is searching GPS info Fast Flashing
GPS GPS chip has gotten GPS info ON
PWR No external power and internal battery voltage is lower than 3.46v OFF
PWR No external power and internal battery voltage is below 3.6V Slow Flashing
PWR External power in and internal battery is charging Fast Flashing
PWR External power in & internal battery fully charged ON

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