Using this plus an RF kit or Carlink is the best way to add a remote start/ alarm in a modern vehicle with integrated electronic ignition switch and immobilizer system. Such as the Chrysler Fobik. A typical remote start system with high current ignition relays often need a separate module in addition to the system to communicate with the BUS network in the car, and is best to be kept on older cars. Also installing this in a modern car, especially with a T-harness, is actually easier and less time consuming than installing a regular R/S in an older vehicle!