What Is a Big 3 Electrical Upgrade?

The Big 3 upgrade improves your vehicle’s electrical system by upgrading three critical power and ground connections under the hood. These factory wires are often undersized and can struggle to support added amplifiers, subwoofers, and other electrical upgrades.

By replacing or supplementing these connections with larger, high-quality wiring, the electrical system becomes more stable and efficient.

Why a Big 3 Upgrade Matters

When your electrical system can’t keep up with demand, you may experience:

• Voltage drop under load

• Dimming headlights

• Reduced amplifier performance

• Electrical warning lights or system instability

A properly installed Big 3 upgrade helps:

• Maintain consistent voltage

• Improve amplifier efficiency

• Reduce strain on the alternator and battery

• Support future audio upgrades

A Big 3 Upgrade Is Recommended If:

You’re running aftermarket amplifiers or subwoofers

Your lights dim when bass hits

You plan to upgrade audio power in the future

You want to protect your vehicle’s electrical system

Every car can Benefit from this upgrade, whether you have a amp and sub or not

Send us your vehicle details and system goals, and we’ll let you know if it’s the right upgrade for you.