I was thinking abouth this lately and I decided to install one today. For those who have no clue what it does, well like the title says, it cuts the power from a switch/relay to your fuel pump. If the switch is at OFF, the motor turns but wont start. ON is the regular setting. And you have to hide it obviously. Took about an hour to install. I'm saying this would reinforced your alarm system by a good 50%. There's a couple ways around it like finding the switch (which they wouldn't
) , or running a jumper directly from the battery to your fuel pump inertia switch but the odd theft will have no clue. Very happy with it 
http://www.allfordmustangs.com/Detailed/41.shtml
) , or running a jumper directly from the battery to your fuel pump inertia switch but the odd theft will have no clue. Very happy with it http://www.allfordmustangs.com/Detailed/41.shtml