Another cheaper option that is possible the most secure of all, this kill switch kit will stop thieves in their tracks, literally. These work by stopping the electrical current that runs from your ignition, into the most vital parts of the car, such as the fuel pump. Working only when the correct key isn’t used, this system can stop your car from being stolen without the need for expensive additions or visible deterrents.
With no damage to your car or engine with this option, this kill switch works on almost any vehicle without the need for electrical or mechanical experience. There are many easy how-to guides that are easy to follow, although if you are nervous with these types of experiences, it might be worth getting a mechanic to install it, for your peace of mind.