Gravity GR-KIT4R 4 Gauge Amplifier Installation Kit with High Performance RCA and Speaker Wire Professional 4 GA Gauge Amplifier Wiring Installation Kit 17FT 4GA Power OFC Cable 3FT 4GA Ground OFC Cable 17FT Double Shielded RCA OFC Cable 17FT/18GA Turn-On Cable & 20FT/16GA OFC Speaker Wire