My Bestbuy has guys that a good to go.

This Amazon.com: Install Essentials 504D Double Guard Stinger Shock Sensor: Car Electronics

The stock sensor is in the computer, and the computer gets mounted to a stout, durable part of the car, so the car absorbs most of the shock before it reaches the sensor. With this external sensor you cant mount it to a wiring harness, ie Mid dash area where mine is behind the radio. So then the harness moves easier and can be set more or less senistive.