To install, first, find the interface port on your vehicle. The location of this port varies by manufacturer and model, but all post-1996 vehicles are required to include this port. The D-shaped OBDII port will be located within three feet of the steering wheel and should be readily available to a person in the driver's seat. If you have trouble finding your interface port, don't forget to look under the dashboard area in front of the passenger seat.
Once you locate the connector, just plug the CYBER LOCK into it -- turn the key to preventing tampering. What it does, essentially, is put a lock on your data recorder diagnostic port so you have control over who accesses it. You can remove it for maintenance, inspection or emissions testing by reversing the process.