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    OBD Unit vs. Hardwired Installation: Which is Better for Your Vehicle?

    23 Jan 2026SmartGPS 3656 min read
    OBD Unit vs. Hardwired Installation: Which is Better for Your Vehicle?

    Two Approaches to GPS Installation

    When choosing a GPS unit for your vehicle, you have two basic options: an OBD unit or a hardwired installation. Each has its advantages.

    OBD Unit (SmartGPS OBD)

    Advantages

  1. Easy installation – plug & play in seconds
  2. Portability – easily transferable between vehicles
  3. Vehicle data access – reading diagnostics from the on-board computer
  4. Lower acquisition costs

    5. Disadvantages

  5. Visible in the interior
  6. More easily disconnected
  7. Dependent on OBD port

    8. Suitable Use

  8. Company vehicles with frequent turnover
  9. Testing and pilot projects
  10. Leased vehicles

    11. Hardwired Installation (SmartGPS Key, Truck)

    Advantages

  11. Discreet placement – hidden installation
  12. Higher security – difficult to disconnect
  13. Independent power – backup battery
  14. Extended functions – immobiliser, digital key

    15. Disadvantages

  15. Requires professional installation
  16. Higher acquisition costs
  17. Less portable

    18. Suitable Use

  18. Company-owned vehicles
  19. High-value vehicles
  20. Long-term use

    21. SmartGPS 365 Recommendations

    For Starting Companies

    Start with an OBD unit and decide on further steps based on experience.

    For Established Fleets

    Combine both types according to vehicle characteristics and usage.

    For Maximum Security

    Choose a hardwired installation with integrated immobiliser.

    We'll be happy to help you select the optimal solution for your fleet.

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