We've all heard the stories that a friend of a friend's father knew someone whowired his car up to shock anyone who touched the door handle or sheetmetal. While it is possible, it is illegal in every state we've checked so far and not very nice if you forget to shut it off before touching the Jeep yourself.
There are way more convenient, easy to use, and cheaper methods of keeping your Jeep safe from thieves. All the theft deterrents we have here can be installed at home, which is really the best way to do it. All the electronic devices work well, but how well they protect your Jeep will depend on how well they are installed. Most installation shops don't put enough time into an install to hide the unit away and make good connections. Usually you will end up with a unit zip-tied under the dash with scotch-lock connectors somewhere readily accessible making all the electrical connections.
Whatever system you pick, mount it up and out of the way where a thief can't easily get to it, make your connections with solder or waterproof connectors, and wrap the wires up to make them look like they were there from the factory. That will make it harder for a potential thief to rewire or disable your security system.
Whether you've got a mechanical tendency, electrical wizardry, or a combination of the two, here are some different ways to keep your Jeep yours.