Product highlightsamplifier wiring kit RCA cables and speaker wire not included maximum power ratings: Class AB: 420 watts RMS, Class D: 650 watts RMS oxygen-free copper wires meet all ANSI and CEA standards 17 feet (5.2m) of 8-gauge red power wire with ring terminal 3 feet (0.9m) of 8-gauge black ground wire with ring terminal 17 feet (5.2m) of 18-gauge blue remote turn-on lead wire brass mini-ANL fuse holder and 60A fuse assorted hardware 6 feet (1.8m) of 8-gauge black split loom 8-gauge firewall bushing two 22-18-gauge butt connectors six wire ties warranty: 1 year What's in the box17' Length of 8AWG power wire (red translucent jacket and terminated with ring-terminal on one end) 3' Length of 8AWG ground wire (black translucent jacket and terminated by a ring-terminal on one end) 17' Length of 18AWG remote turn-on wire (blue jacket) Fuse holder 60A Mini-ANL fuse (installed in fuse holder) Firewall bushing 2 Butt-connectors 6' Length of split loom 6 Wire ties About this itemWritten by Crutchfield's Buck PomerantzDeliver the power your amp deserves Crutchfield's 8-gauge amplifier wiring kit contains the wire and hardware necessary to supply power to your amplifier safely, efficiently, and economically. This wiring kit does not include RCA patch cables or speaker wire. You may need to purchase those items separately, in order to complete your installation. Power ratings and amp efficiency Most amplifiers come in two distinct "Classes" of technology with different efficiencies and power wire size requirements. Class AB amps typically feature 50% to 60% efficiency, while Class D amps are usually 75% to 80% efficient. This Crutchfield wiring kit was designed to accommodate the energy demands of a Class AB amplifier with a total output of up to 420 watts RMS, or a Class D amp with up to 650 watts RMS output. Crutchfield wire Crutchfield wire is made of oxygen-free copper, with no impurities that could raise its resistance to a signal's flow or add interference. Crutchfield wire meets all Consumer Technology Association (CTA-2015) standards for size, resistance, and insulation quality.