Rockville RFC30F 30 Farad Capacitor Voltage Display+Amp Kit 30 Farad Capacitor Blue Voltage Display + Built In Dist Block. ESR (Equivalent Series Resistance): 0.015 ohm @ 120Hz, 25C, 30 Farad Digital Hybrid Capacitor with Blue Illumination. Blue illuminated window with light following played music, Black wire mesh cover Warning tones for reverse polarity connection. 3-Digit, super bright LED voltage meter, Automatic sleep status when volume is low. Operating Voltage: 10 - 16V DC, Surge Voltage: 20V DC. Voltage measure accurate to +/- 0.1VDC Capacitance tolerance: +/- 10%. Over-voltage protection circuit automatically alarms when the voltage above 17.5V or under 10V 4 Gauge 2 Channel Complete Car Amplifier Installation Kit 100% Pure Copper RCA Cables. 4 Gauge Power Amplifier Installation Kit, Designed specifically for car audio systems over 1000 watts RMS to 2000 Watts Made from silver-tinned 100% virgin copper for a pure uninterrupted transfer of power and signal. The solid brass gold plated Mini ANL Fuse Holder offers ideal protection for high powered systems Strand Count: 1862, BC-5W2 Compliant (1) Rockville RFC30F 30 Farad Capacitor Blue Voltage Display (1) Metra V8-RAK4 4 AWG Gauge 100% Copper Car/Marine Amp Installation Wire Kit OFC Rockville RFC30F 30 Farad Capacitor Blue Voltage Display ESR (Equivalent Series Resistance): 0.015 ohm @ 120Hz, 25C 30 Farad Digital Hybrid Capacitor with Blue Illumination Blue illuminated window with light following played music Black wire mesh cover Warning tones for reverse polarity connection 3-Digit, super bright LED voltage meter Automatic sleep status when volume is low Operating Voltage: 10 - 16V DC Surge Voltage: 20V DC Voltage measure accurate to +/- 0.1VDC Capacitance tolerance: +/- 10% Over-voltage protection circuit automatically alarms when the voltage above 17.5V or under 10V Unit dimensions (Inches): 10.91 L x 6.38 W x 2.56 H 17FT V8 4 AWG OFC matte solid silver multi-strand power wire Metra V8-RAK4 4 AWG Gauge 100% Copper Car/Marine Amp Installation Wire Kit OFC 3FT V8 4 AWG OFC matte solid black multi-strand ground wire 17FT 18 AWG OFC blue remote turn-on wire 17FT V8 noise rejecting twisted rca cable with precision molded ends and split tip Proprietary V8 MINI ANL fuse holder with 100A fuse Nickel Plated 4 AWG seamed crimp ring terminal with 8.5mm hole and silver boot connected at battery end Nickel Plated 4 AWG seamed crimp ring terminal with 8.5mm hole and black boot connected at ground 4 AWG spade terminals with silver and black boots for amp connection Miscellaneous connectors terminals and wire ties