Big 3 Wiring Upgrade Kit – 1/0 Gauge CCA Power & Ground Cable with Pre-Crimped Copper Terminals & Heat Shrink Tubing for Car Audio Amplifier, Alternator/Battery/Chassis Ground Upgrade Big 3 Kit
Fix headlight dimming with a complete Big 3 current upgrade. Upgrading your alternator, battery positive, and chassis ground maximizes current flow and stabilizes voltage—so when heavy bass hits or your amp draws full power, your lights stay bright and your system stays strong.
Premium CCA wire delivers big performance without the big price tag. Copper-clad aluminum 0 Gauge offers excellent conductivity for daily power transmission at a fraction of the cost and weight of OFC. Whether you're upgrading your car audio, wiring a trolling motor on your boat, or connecting a solar inverter, this kit gives you the current capacity you need without overspending.
Vibration-proof terminals hold tight under the hood. Factory-crimped SC50 copper lugs ensure full surface-to-surface contact—no gaps, no hot spots, no resistance. Adhesive-lined heat shrink (3:1 ratio) creates an airtight, waterproof seal that resists moisture, engine heat, and road vibration. No loose terminals, no electrical shorts—just reliable power, mile after mile.
Cable ties and self-adhesive mounts keep things tidy – no drilling required. Secure your 0 Gauge wires to carpet, metal, plastic, or glass with 3M-backed mounts. No screws, no holes, no permanent modifications – just a clean installation that won't leave holes in your vehicle.
Everything you need is in one box – just open and install. Complete kit includes: 6ft red 0 Gauge power cable, two 4ft black 0 Gauge ground cables, six SC50 copper lug terminals, six adhesive-lined heat shrink tubes, ten self-adhesive mounts, ten cable tie mounts, and ten zip ties. Fits most cars, trucks, and SUVs.