All components for installation are included with this new Toyota Celica security alarm system which is designed for a perfect fit and operation because it is factory designed for your vehicle. With this genuine factory Toyota Celica alarm system accessory you can be assured of the proper operation so why purchase anything but a factory system that is designed to work with your vehicle.. With this factory Toyota Celica security system you can be sure it was designed specifically for your Celica for proper fitment and operation since it is designed for your vehicle. Your new factory Toyota Celica security system is designed and engineered for a perfect fit, from the connections to the mounting process to the overall operation you won't be disappointed.