The Maxxsonics 100-Watt 4-Channel Amplifier Installation Kit provides a complete system solution. Install your amplifier with confidence, that this 4-Guage Kit will provide crystal clear, quality sound out the speakers of your vehicle. This complete kit includes a red, and black power cable as well as RCA cables, and square or round speaker wires, as well as a remote turn on wire. The red and black power wires are sized a 4 according to the America Wire Gauge standards, please verify the correct wire size necessary to avoid damage to your amplifier.