1/0 AWG
Copper-clad aluminum (CCA)
Complete installation kit
$32.95
Power wire gauge
Conductor
Insulation
Power wire length
Ground wire length
Max watts
Fuse holder
Fuse type
Fuse Size
RCA included
RCA Channels
RCA Length
Remote wire
Remote length
Speaker wire
Speaker wire gauge
Speaker wire length
Part number
The Sky High Car Audio E-Series 1/0 Big 3 Upgrade is a comprehensive kit designed to enhance the electrical system of a vehicle, specifically focusing on the critical connections known as the "Big 3" - which normally consist of alternator to battery positive, battery negative to chassis, and engine block to chassis. This upgrade is crucial for improving electrical conductivity, reducing voltage drop, and optimizing the performance of audio systems and other power-hungry components in the vehicle. The kit includes three high-quality cables, each measuring 4 feet in length. These cables consist of two grounding cables and one power cable, all constructed with oversized wire compared to the min
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The correct wiring kit depends on the amplifier’s current demand, recommended power-wire gauge and fuse requirements—not wattage alone. Compare the kit specifications with the amplifier manufacturer’s recommendations before ordering.
The included components are listed in the “What’s Included” section above. Review that list carefully because cable lengths, fuse protection, RCA cables, speaker wire and installation hardware can vary between kits.
CCA wire uses copper-clad aluminum conductors, while OFC wire uses oxygen-free copper. OFC offers better conductivity and can carry more current for its size. CCA is a more affordable option but may require a larger gauge to support the same amplifier demand.
Check the amplifier manufacturer’s recommended power-wire gauge and fuse rating. The correct gauge also depends on the amplifier’s current demand and the length of the cable run. When in doubt, moving to a larger OFC cable is generally preferable to using undersized wire.
No. The fuse must protect the power wire while also supporting the connected amplifier. Compare the included fuse with the amplifier manufacturer’s recommended external fuse rating. A different fuse may be required for your specific system.
Install the main fuse holder close to the vehicle battery, before the power wire travels through the vehicle. The exact maximum distance may depend on the installation and applicable rules, but keeping the unfused portion of the cable as short as practical provides better protection.
The power and ground wiring can be used regardless of the radio type, but the amplifier still needs a compatible audio signal. A factory radio may require a line output converter, digital signal processor or an amplifier with speaker-level inputs.
That depends on the combined current demand of the amplifiers and the capacity of the included power wire and fuse. Multi-amplifier systems commonly require larger main power wire, a distribution block and separately fused outputs.
Yes. The amplifier ground connection should normally use the same conductor size and material as the power connection. Keep the ground cable short and attach it securely to clean, bare chassis metal.
A confident installer with the correct tools can complete many basic installations. Disconnect the battery before beginning, protect every cable passing through metal and verify all connections before restoring power. Professional installation is recommended if you are unfamiliar with vehicle electrical systems.
