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
Disconnect the negative battery terminal before beginning installation.
Use proper eye protection and tools.
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.
Locate the factory ground point from the battery negative to the chassis.
Clean the chassis contact area to bare metal for optimal conductivity.
Crimp a copper ring terminal onto one end of a 5-ft wire run.
Secure the ring terminal to the chassis using an existing or upgraded ground bolt.
Attach the opposite end to the battery negative terminal.
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.
Locate a solid engine block grounding point (factory ground preferred).
Clean both contact surfaces to bare metal.
Crimp copper ring terminals on both ends of the second 5-ft wire run.
Secure one end to the engine block and the other to the chassis.
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.
Identify the alternator positive output post.
Route the third 5-ft wire run safely to the battery positive terminal.
Crimp copper ring terminals to both ends and secure connections.
Seal all exposed terminals with heat shrink.
Result: Stronger charging performance and reduced voltage drop under load.
STEP 4 – Final Inspection
Verify all bolts are tight and connections are secure.
Ensure wires are routed away from sharp edges and heat sources.
Reconnect the battery negative terminal.
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.
