Installing GPS Tracking Device

From plug and play, to covert. You decide.

GPS Device Installation

In its most simple application, the GO System provides an immediate and unskilled installation with an OBD plug-in. By adding a simple zip tie many fleet management companies can be tracking the day the GPS devices are delivered with little fear of tampering. From this point fleet managers can work to evaluate other methods of installation that suit individual vehicle needs such as the addition of a Y-harness, extension harness, driver ID or other modular accessory. Download troubleshooting flowchart.

Pro Tip
  1. Read all instructions before starting. There are good tips included which will reduce time off the road.
  2. Save this webpage to your phone or print the guides for reference when installing.
  3. Install the Geotab mobile app or save the MyFleetView page on your phone to check for devices reporting.
  4. The GPS units cannot report to your account unless added to your account online. Check that this is done. Watch video
  5. Work as a team. Do the first install together talking about standards. This will improve standardization, quality and efficiency.
  6. Document which GO device serial number goes into which vehicle.
    1. Click here to access the Fleetistics install checker (GO system only) and tracker (all devices).
  7. Place a GO device serial number decal on the door jam just in case you forget to write down the device serial number. Do this before starting so you don’t forget.
GPS tracker wiring harness

Popular Installation Method

Many customers will choose to invest in a Y-harness which enables the GPS tracker to be moved into the dash and keep the OBD port open. There are 3 connections on the Y-harness and they are 1. The vehicles wiring harness coming from the engine 2. The OBD port visible and accessible to you 3. The point where the GPS unit connects to the harness.

If you are installing on a larger truck, Class 6-8, you will need a 6 or 9 pin adaptor harness. The GO telematics device works with almost all engine protocols, OBD, J-1708 and J-1939. If you have a really old truck a 3-wire harness is available.

Pro Tip
The GPS device must be secured to the vehicle chassis in such a way that it moves with the vehicle. A telematics unit that flops around creates excessive accelerometer data and which will lead to the accelerometer being disabled by Geotab or Fleetistics due to increased data cost. The GPS device must be mounted so the GPS antenna is not facing the metal frame. Metal blocks GPS signals from the satellites and this can significantly reduce the quality of tracking data. Click here to learn more about the GO mounting bracket for the most secure option and best performance. A mounting bracket can be ordered from our retail store at or from the Products and Services catalog in your MyFleetistics account.

Installation Types

OBD GPS Installation, No Harness
To find the OBD port look on the drivers side in most small passenger cars and light duty trucks. If you are installing on a big truck just look for the larger round port of a J-bus connector. The OBD port will be located somewhere between your knees and your left ankle. The OBD port may be facing directly down behind the lip of the plastic panel. Get under the dash and look around. Click here to use an OBD locator guide if you get stuck.

When installing without a harness be sure the GPS unit will not be broken by the driver hitting it repeatedly. This is not covered by warranty. Once inserted onto the OBD port and lights come on, use 1 or more zip ties to wrap around the GO device. Be sure you don’t damage the wires on the back of the port but make it snug enough so you will know if anyone tampers with it. Your GO tracker will come with serial number zip ties to further deter tampering.

OBD GPS Installation, Y-Harness
Once you have located the OBD port, back out the port by removing the two screws on either side in most cases. Insert the end of the harness with the OBD bracket and secure. Connect the second end of the Y-harness into the vehicle bracket you just removed and the third end to the GPS device.

The Y-harness, and all harnesses, are custom designed and built by Geotab. You cannot buy a harness on Amazon and get it to work properly. Investing in the right harness will ensure optimum performance.

3-Wire Installation
If you cannot use the OBD port, a 3-wire harness is available however the importance of properly mounting the device remains the same as using a harness. There are 3 connections that need to be made; power, ground and ignition. It is recommended avoiding crimp connectors. The poke-and-wrap or soldering ensure reliable long-term connections. Click here to watch a video on the poke-and-wrap technique.

The wiring connections should be done with the heavy wires coming from the steering column, don’t connect to the cigarette lighter adaptor, that is old school. Using a multi-meter to find the proper wires and complete the connection. Cover in heat shrink tubing to prevent a ground. Make note of the wire location and color for easy future reference.

Using a test light on new vehicles may cause damage to the computer system. Use a multi-meter designed for automotive applications. When unsure, hire a professional installer. Pro installers often save you time and money considering the cost of downtime of a vehicle or paying a wage for a slow install. Fleetistics can help you find an installer, project manage the installation or just talk you through it.

IOX Installations
There are a wide variety of IOX connectors available that connect to the GPS unit through the small port on the side of the Geotab GO device. IOX are used for add-ons such as driver ID or GO Talk. IOX connectors and be daisy chained together to provide very custom hardware configurations. Contact your account manager to learn more or visit our IOX web page.

Confirming Installations

Once the unit is installed there are several things to check to get a good idea of proper function. It is a good idea to have the mobile app installed on your phone so you can check to see if it reports. Click the link above to download the Geotab app from the Play Store or visit iTunes. The Fleetistics MyFleetView web link can also be used to show last reported location.

GO7 GPS Tracker from Geotab
Pro Tip
The GPS antenna in the GO automobile tracking device is directional. Meaning that if you mount it with the wrong side facing the metal frame of the vehicle it will not work, as well. The antenna is on the bottom of the GPS unit. When looking at the writing on the device, the antenna is below the text. You might think it should be on the top but it is actually on the bottom of the GO7 device to receive reflected signals from within the truck or car.

GPS Installation Checklist

  1. Be sure you are in the cellular data network for your device type. Either AT&T, Verizon or T-Mobile depending on your unit.
  2. Ensure the device is listed in your account. You can install the device and tell it should be reporting but you cannot be 100% sure until the device is added to your MyFleetistics account and you see track data.
  3. Check for lights
    1. Power – proper power, ground and ignition through the OBD port or 3-wire harness
    2. GPS – GPS signal being received
    3. Network – Data processing server communication
  4. Beeps – There are several beeps and lights which also indicate proper function
    1. Download guide here
  5. Cycle the ignition a few times or take the vehicle for a short test drive after idling the vehicle for 2-3 minutes. This allows the GPS device to get a position fix memorized for faster future GPS acquisition and GPS latch. If it does not appear after idling, take it for a spin.


If you installed the Geotab GO device and you cannot see it on the map after the above steps, you may have a bad OBD harness on your vehicle. If it is your first vehicle, move to another truck with a different GPS tracking device and see if it also fails. If you get two device failures, it is likely NOT a device issue. The failure rate is very low and the odds of two bad devices back-to-back is almost zero. Review the checklist above and see where you missed something or download the troubleshooting flowchart here.

If you have another vehicle that is reporting correctly, install the “faulty”, or non-reporting device, in the working vehicle and see if it reports. If it reports, your OBD port may be bad on the first vehicle. Consider having the OBD port checked and replaced or order a 3-wire harness for that vehicle. A 3-wire harness will not report engine diagnostics but it will report accelerometer for driver behavior.

Pro Tip
Leave the OBD port or Y-harness exposed on the first vehicle you get to report. You can then use this vehicle to test devices if one fails to report from another vehicle. It is a very quick way to troubleshoot the device. You probably won’t need it, but it is an idea to keep installs rolling when doing hundreds.

Opening a Support Case

If all this fails, who knew, you are special. When everything is done correctly there is less than a 1% device failure rate. When you need Fleeistics support – don’t call unless you are standing at the vehicle. If you can submit the serial number Fleetistics Support will investigate the issue and then call you back. This means you can continue to work while we investigate your issue. If you are installing after hours, give us a heads up so we can review your plan, training, etc. Install questions questions are not considered emergencies but we are glad to coordinate with you to have someone available during an install project.

You can open a case about a half dozen ways. Click here to see how.

Pro Tip
Most enterprise fleets will keep 1 spare unit active on the shelf for every 100 devices. This enables the customer to conduct an emergency swap and then troubleshoot or replace the device. Most GO customers who purchase at our normal great rates receive a limited lifetime warranty covering manufacturing defects and failures.

GO GPS Installation with Y-Harness

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