Resilient Sounds Big 3 Upgrade Kit – 1/0 Premium High Conductivity Copper Wire – 99.9% Copper – Made in the USA – Includes (3) 4-ft Power Runs, Heat Shrink & Copper Ring Terminals
Key Features
COMPLETE BIG 3 UPGRADE KIT: Includes (3) 4-ft runs of true 1/0 premium high-conductivity copper wire to upgrade your vehicle’s critical electrical paths.
99.9% PURE COPPER : Ultra-low resistance copper delivers excellent current flow and improved voltage stability for high-power car audio systems.
MADE IN THE USA : Manufactured in the United States under an ISO 9001:2015–compliant quality management system for consistency and reliability.
INSTALL-READY HARDWARE INCLUDED: Comes with heavy-duty copper ring terminals and heat shrink tubing for clean, professional connections.
TRUE 1/0 AWG PERFORMANCE: Full-size gauge with flexible, heat-resistant insulation designed for engine bay and chassis routing.
What’s Included
(3) × 4-ft lengths of 1/0 Premium High Conductivity Copper Wire
(6) Copper Ring Terminals (sized for 1/0 AWG)
(6) Heat Shrink Tubing for secure, corrosion-resistant terminations
(Battery, alternator, and mounting hardware not included)
THE FOUNDATION OF A STRONG ELECTRICAL SYSTEM
Upgrade your vehicle’s electrical backbone with Resilient Sounds 1/0 Premium High Conductivity Copper Wire, Made in the USA.
What Is the Big 3 Upgrade?
The Big 3 upgrade reinforces your vehicle’s three most critical electrical paths to reduce voltage drop and improve current flow:
Battery Negative → Chassis Ground
Engine Block → Chassis Ground
Alternator Positive → Battery Positive
Using undersized or mixed-metal wire limits system performance. Our true 1/0, 99.9% copper wire ensures your charging system can keep up with high-power amplifiers.
Why Use Resilient Sounds Wire for the Big 3
99.9% High Conductivity Copper for superior current transfer
True 1/0 AWG — no undersized strands
Ultra-Low Resistance reduces voltage drop
Flexible, Heat-Resistant Jacket for clean routing
Made in the USA
ISO 9001:2015 Quality Process
Big 3 Performance Benefits
- Stronger, more stable voltage
- Reduced amplifier strain
- Improved bass response
- Better alternator efficiency
- Cleaner electrical foundation for future upgrades
| Feature | RS Premium Copper | Standard OFC | CCA |
|---|---|---|---|
| Copper Content | 99.9% Copper | ~99.9% | Aluminum Core |
| Gauge Accuracy | True 1/0 | Usually True | Undersized |
| Resistance | Ultra-Low | Low | High |
| Flexibility | High | High | Low |
| Heat Handling | Superior | Very Good | Poor |
| Manufacturing | Made in USA | Imported | Imported |
| Quality System | ISO 9001:2015 | Varies | None |
| Recommended Use | High Power | High Power | Budget Only |
RS Big 3 Upgrade Kit – 1/0 Premium High Conductivity Pure Copper Wire
🔧 BIG 3 UPGRADE – INSTALLATION STEPS
⚠️ IMPORTANT SAFETY NOTICE
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Disconnect the negative battery terminal before beginning installation.
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Use proper eye protection and tools.
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This guide is a general reference — vehicle layouts may vary.
STEP 1 – Battery Negative to Chassis Ground
Purpose: Strengthen the primary ground path for your entire electrical system.
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Locate the factory ground point from the battery negative to the chassis.
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Clean the chassis contact area to bare metal for optimal conductivity.
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Crimp a copper ring terminal onto one end of a 5-ft wire run.
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Secure the ring terminal to the chassis using an existing or upgraded ground bolt.
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Attach the opposite end to the battery negative terminal.
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Seal connections using included heat shrink.
Result: Reduced ground resistance and improved voltage stability.
STEP 2 – Engine Block to Chassis Ground
Purpose: Improve grounding between the engine, alternator, and chassis.
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Locate a solid engine block grounding point (factory ground preferred).
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Clean both contact surfaces to bare metal.
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Crimp copper ring terminals on both ends of the second 5-ft wire run.
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Secure one end to the engine block and the other to the chassis.
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Apply heat shrink to protect the terminations.
Result: Improved alternator efficiency and reduced electrical strain.
STEP 3 – Alternator Positive to Battery Positive
Purpose: Increase current flow from the alternator to the battery.
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Identify the alternator positive output post.
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Route the third 5-ft wire run safely to the battery positive terminal.
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Crimp copper ring terminals to both ends and secure connections.
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Seal all exposed terminals with heat shrink.
Result: Stronger charging performance and reduced voltage drop under load.
STEP 4 – Final Inspection
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Verify all bolts are tight and connections are secure.
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Ensure wires are routed away from sharp edges and heat sources.
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Reconnect the battery negative terminal.
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Start the vehicle and verify normal operation.
✅ INSTALLATION COMPLETE
Your vehicle’s electrical system is now reinforced with true 1/0, 99.9% copper wiring, improving voltage stability and supporting high-power audio systems.
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