Wiring Kits: Be sure to select the wiring kit that's appropriate for your amplifier. Kits come in a variety of sizes: 10-gauge, 8-gauge, 4-gauge, 1/0-gauge, and multi-amp.
 

Capacitors: Your amplifier is one of many elements competing for the available power in your car. Capacitors store current, which your amp can tap when it needs it most.
 

Fuse Holders: A fuse holder is essential to protect your fuses from heat and moisture, to maintain secure wiring connections, and to give your system a professional look.
 

Vehicle-specific Wiring Harnesses: A wiring harness connects your new receiver to your car's factory wiring. To buy a harness separately, identify your vehicle.
 

Vehicle-specific Antenna Adapters: Antenna adapters let you connect specialized antenna plugs to your new radio.
 

Noise Killers: A single layer of Dynamat vibration damping material reduces unwanted noise in your car by 3 dB or more that's the same as doubling your system's power output!
 

Power Inverters: What do you do when you want to operate 110-volt appliances in your car? Use a power inverter to turn your cigarette lighter into an AC outlet.