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The VO1 is a 4G OBD-II plug-in GPS tracker that requires absolutely no wiring or installation tools. It draws power directly from your vehicle’s OBD-II port, so the moment you plug it in the device is powered and ready to go. This makes it the quickest way to get live GPS tracking on any car or light commercial vehicle built after 2001 — no electrician, no drilling, and no permanent modifications to your vehicle.

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What’s in the Box

  • VO1 OBD tracker unit
  • Quick-start guide
For the full manufacturer reference, visit the VO1 User Guide.

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Installation

1

Locate your OBD-II port

The OBD-II port is a 16-pin trapezoidal socket typically found beneath the steering column, on the lower section of the dashboard on the driver’s side. In most vehicles it is uncovered and easy to spot; on some models it may be hidden behind a small plastic flap.
2

Plug in the VO1

With the ignition off, firmly push the VO1 into the OBD-II port until it clicks into place. The device should sit flush against the dashboard — if it feels loose, push it in further.
3

Activate your subscription

Before the device can transmit location data, you need an active subscription linked to your VO1. Visit shieldgps.co/activate and follow the on-screen steps to register your device.
4

Turn on the ignition

Turn the ignition to the accessory or run position. The VO1 will power on automatically and begin acquiring GPS signal and connecting to the 4G network.
5

Verify device status

Check the LED indicator on the VO1 to confirm it has connected successfully. Allow up to 2 minutes for a full GPS fix on first use.

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Powering On & First Use

The VO1 receives power directly from the OBD-II port — it powers on and off with the vehicle’s ignition in most cars. No charging or battery management is required. On first use, allow up to 2 minutes for the device to:
  1. Acquire a GPS signal
  2. Register on the 4G network
  3. Begin sending location updates to the ShieldGPS platform
Some vehicles supply constant power to the OBD-II port even when the ignition is off. In those vehicles the VO1 will remain powered and continue tracking at all times.

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Connecting to the App

1

Download the ShieldGPS app

Install the ShieldGPS app from the App Store or Google Play. You can also use the web dashboard at shieldgps.co/dashboard.
2

Log in to your account

Open the app and sign in with the credentials you created during activation at shieldgps.co/activate.
3

Add your VO1

Tap Add Device and enter the 15-digit IMEI number printed on the VO1 unit and its packaging. You can also find the IMEI inside the app once the device first comes online.
4

Confirm live tracking

Your VO1 will appear on the map. Tap the device icon to view its real-time location, current speed, and trip status. The location refreshes every 10 seconds.

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LED Indicator Meanings

A subscription is required for your VO1 to transmit live location data. Without an active plan, the device cannot send updates to the app or dashboard. Visit Activate Your Tracker to set up or manage your subscription.