Car stereo caps are one of the most overlooked accessories in a car audio system. A capacitor will ensure your subwoofer is always getting the power it needs in stress conditions. Do your lights now dim after your new car audio installation? This is due to your amplifier drawing more power than your electrical system can handle. A capacitor fixes this problem, it job is too keep a reserve of power, whenever your amplifier tries to draw a ton of power it supplies that power instead, keeping your electronics running smooth. These 1-5 and hybrid farad capacitors will cover and protect your system.