Rockville RDA0+4K Bundle: 0+4 Gauge Dual Amplifier Installation Wire Kit, RXC2D 2-Farad Stiffening Power Capacitor with LED Digital Volt Meter, for Car Audio Systems, 2-Items

Build a stronger, cleaner-sounding car audio system with this two-piece Rockville bundle. The RDA0+4K 0+4 Gauge Dual Amplifier Installation Kit supplies the heavy-duty wiring and pro hardware needed for reliable high-current delivery across a dual-amp layout. Super Flex 0-Gauge and 4-Gauge power and ground runs minimize voltage drop, while 100% copper twisted-pair, double-shielded RCA interconnects preserve signal integrity from head unit to amplifiers. Nickel-plated distribution and fused blocks, a firewall grommet, terminals, and fasteners are included for a tidy, serviceable install.To stabilize your electrical system during dynamic peaks, the RXC2D 2-Farad stiffening capacitor adds fast energy reserve and IC-controlled charging/discharging. Its red LED voltage display and blue charge indicators make monitoring simple, and the clear Lucite brackets mount securely in the trunk or amp rack. Together, this kit reduces clipping and dimming, improves transient response, and helps amplifiers run cooler-perfect for subwoofer power stages paired with mids/highs amplifiers in daily drivers or show builds.

• Package Includes: (1) Rockville RDA0+4K 0+4 Gauge Dual Amplifier Installation Kit, (1) Rockville RXC2D 2 Farad Stiffening Power Capacitor - a matched wiring and power-stability bundle for dual-amp car audio builds.
• High-Current Wiring For Big Systems: The RDA0+4K supports up to 3000-Watts systems with oxygen-free copper RCA interconnects and heavy-gauge, low-resistance power/ground cables engineered for cool operation. Braided Super Flex jackets reduce skin effect and make routing easier through firewalls and trim, while nickel-plated terminations resist corrosion for stable current transfer and long-term reliability in daily-driven installs.
• Complete Pro Install Hardware: Includes 17' 0-Gauge power, 3' 0-Gauge ground, 6' 4-Gauge power, 6' 4-Gauge ground, 15' 12-Gauge speaker wire, 16' 18-Gauge remote, 17' twisted-pair double-shielded OFC RCA, ANL distribution with 150-Amp fuse, (2) 100-Amp ANL fuses, nickel battery terminal, fused and non-fused distribution blocks, firewall grommet, ring/spade terminals, butt connectors, screws, and cable ties for a clean, secure finish.
• Capacitor Stabilizes Bass Hits: The RXC2D 2-Farad stiffening capacitor with IC-controlled charging/discharging combats headlight dimming and voltage sag on heavy transients, improving amplifier headroom and reducing clipping. A red LED digital voltmeter and blue charge indicators simplify monitoring, while clear Lucite mounting brackets and stainless hardware provide strong, vibration-resistant mounting for show-quality and daily setups alike.
• Flexible, Clean, DIY-Friendly: Color-coded translucent jackets, woven nylon mesh on 0-Gauge, and springy Super Flex insulation speed routing and protect against abrasion in tight bays. Nickel-plated blocks and terminals ensure repeatable, low-loss connections; the included grommet helps maintain a safe firewall pass-through. Ideal for dual-amp sub + mids/highs layouts where stable voltage, low impedance, and neat cable management are priorities.