You will be assured of easy operation when purchasing this factory Toyota Corolla alarm system designed to work on the highest level like all factory components from Toyota Motor corporation. You can be assured of a perfect fit when purchasing this factory Toyota Corolla security system for your vehicle so you won't have any unwanted rattles or extra wires hanging down from under the dash. This complete factory Toyota Corolla security alarm includes all components for proper installation that will assure the proper operation will be in place when you have completed the install process. Factory quality is important when purchasing any Toyota Corolla security system for your vehicle so that you can be assured the connections will be correct and the system will have proper operation.