The extension cord is an optional accessory.
Follow the installation method below,
The Extension Cord is a good choice for narrow installation spaces, or a weak GPS signal, and for the purpose of hiding the device out of site.
Perform the following operations to install the device:
1) Stick two small Velcro strips to the labeled device surface and the connected surface of the extension cord.
2) Plug the male side of the extension cord to the vehicle OBDII connector.
3) Find a good hiding spot under the dashboard, and stick the big Velcro strip to the vehicle.
4) Join both velcro strips together.
Note: You can also use cable ties and other ways to secure the device when there is enough space in the vehicle.