Red 4-gauge. Amplifier kit provide you with everything you need to install an amplifier into any system. Amplifier kit adheres to strict CEA-2015 guidelines for meeting required strand count for optimum current transfer. Utilizes a jacket that allows the power and ground wires to be resistant to the rigors and extremes found in an engine compartment to ensure optimal system functionality. Includes 18" 4 AWG red power cable, 4" 4 AWG black ground cable, 16" 18 AWG remote wire, (1) 4 AWG ring terminal 5/16", (1) 4 AWG AFS fuse holder, (1) 150A AFS fuse, (1) 18 AWG red butt connector, (1) 18 AWG spade terminal, (1) 4 AWG ring terminal 3/16".