Tesla OBD2 Adapter Installation - gen 1


Make sure that you have the proper tools.

What you Need:

  1. OBD2 Scan tool of your choosing. OBDLink LX is most recommended.
  1. OHP OBD2 Harness Adapter for Tesla Model 3 & Y 2019-2020 and 2021 Refresh
  1. Flat-head screwdriver.
  1. Prybars (plastic) or other tools with similar functions.

Before the installation process, make sure that the vehicle is completely powered off.

How to Power Down the Car: 

  1. Roll down the driver's window.
  1. Open the rear door to access the rear seat. 
  1. Through the open front window, lean in and access the LCD monitor screen. Be careful not to touch the seat.
  1. On the monitor, press the Vehicle icon menu button and select Safety and Security menu.
  1. Press POWER OFF and confirm.
  1. Warning: Wait for 2 to 8 minutes for the car's power relay to disconnect. Normally, you’ll hear a clanking sound when the vehicle is completely powered off.


  1. Find the removable rear trim cover piece of the center console behind the driver's seat.
  1. Remove the trim cover using prybars. You’ll find the vehicle’s main console connector inside.
  1. Using the flat-head screwdriver, disconnect the console connector. 
  1. Connect the female side of the OHP OBD2 harness adapter to the male side of the vehicle’s console connector. 
  1. Then connect the male side of the OHP OBD2 harness adapter to the fixed female side of the console connector.
  1. Fit the cable into the empty space of the console. 
  1. Leave the black OBD2 cord of the OHP harness adapter outside of the console and re-attach the trim cover. 
  1. Connect the black OBD2 cord to a scan tool of your choosing. 
  1. You are good to go. You can now connect your scan tool to your phone, laptop, or any compatible device.