BOSS Audio Systems kit comes with everything you need to install an amplifier in your car. The durable, metal-carrying box comes with all the essentials neatly. With this kit you can wire any Bose car speaker system, it doesn't matter if the car is an old model or a modern model. Open up your musical scene and enjoy the most comfortable ride of your life. Some can be used as "dual purpose" as they come with RCA leads that can be attached.