I've had my X broken into via the drivers door lock, trust me, the cover doesn't do jack sh*t. you have to remove the entire lock assembly to remove this as a possible way to enter the vehicle..... What you CAN do is have the stealer program the alarm so that the only way to shut it off and hence be able to start the car is via the remote on the original key. I highly recommened this.

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You have your way. I have my way. As for the right way, the correct way, and the only way, it does not exist.