WHAT'S INCLUDED - Complete remote start system compatible with Chrysler 300 2005-2007. Includes an all-in-one remote starter data interface module and T-Harness. Firmware preloaded for your vehicle. All components required for installation are included. Automatic Transmission ONLY REMOTE START FEATURES - This is an Add-on remote start system for vehicles with existing keyless entry. Use your existing remotes to start the car by pressing the Lock button three times. No need to carry extra key fobs! When you are ready to drive, just put your key in the ignition and go! Smartphone module ready. Complete kit includes data module and all parts required for installation. SEMI PLUG & PLAY INSTALLATION TYPE - This kit uses a plug-in T-Harness which dramatically reduces number of wiring connections that typical systems require. The installation of this product will still require up to 6 wiring connections depending on how you want to configure the system. We provide concise directions with wire colors and locations. A person with basic knowledge of wiring car electronics should be able to install this product successfully. OPTIONAL - Smartphone app interface module available separately (shipping limited to the continental U.S.).. CSRF Kit 1 Ready - Add 1 button remotes. CSRF Kit 4 Ready - Add 5 button remotes. MPC TECHNICAL SUPPORT - United States, Tucson, AZ. Several different methods of support available. QR code instructions included to ensure the most up to date information. Product my not work in vehicles manufactured for sale outside of U.S. & Canada.