You either need to go and buy a car stereo with subwoofer outputs for the rca cable, or you can use your back speakers of your vehicle, you use some regular speaker wire and run it from one of the back speakers to your amp, and use a hookup like an rca hook up 2 plug it into your amp, I did it with my car, but it doesnt sound very well, you can't control the volume of the subwoofer
