[quote="sduncan"]Do you want something that makes noise or something that might actually keep the jeep from getting taken?
For a noise system, go see Rudy.
For a theft deterrant click the link...
http://www.quadratec.com/products/15001_1000.htmYea..if you know what you're doing you can build it yourself for less than $50, but for a quick install you're better off to just pay for it. It doesn't have a siren or make noise, but it makes it damn tough for someone to drive off with your rig without tripping the hidden magnetic switch. It sucks though as it only works on 97-06 TJ or LJ. I have no clue if it could be made to work on any model XJ or JK.[/quote]
With your nifty $50 device it would be even more simple to cut a single wire from your ignition and run a toggle switch in line with it, before you walk away flip the switch... Really with my switch idea your possibilities are endless. You could hook it up to your fuel pump, distributor, ignition, battery, it would be your cheapest route and as long as your the only one who knows where the switch is, it would be pretty efficient...