Toyota Tundra Big 7 Battery Cable Kit (Gen 2 – 2007–2018)
Your second-gen Tundra is a beast, but factory wiring wasn’t designed to handle winches, lighting setups, fridges, or other high-draw accessories. Voltage drops, dim lights, and sluggish starts are a sign it’s time for an upgrade — the Big 7 Kit is the answer.
What’s Inside the Big 7 Kit?
The “Big 3” — alternator → battery, battery → chassis, engine → chassis — is just the start. The Big 7 Kit adds dedicated runs to the starter and fuse relay box, routed cleanly with labeled cables for a straightforward, frustration-free installation.
Built for Trail Abuse
1/0 GA SAE-grade pure copper cable — full conductivity, no copper-clad shortcuts
Solid-copper, machine-crimped terminals, sealed with marine-grade heat-shrink
Corrosion-resistant battery clamps ready for mud, water, and heat
Clearly labeled cables make installation clean and organized
Ready for Tundra Duty
This 1/0 GA Big 7 Kit is engineered for the 2007–2018 Toyota Tundra, delivering reliable voltage, faster starts, and consistent accessory performance whether you’re off-roading, towing, or powering multiple high-draw accessories.
Proudly made in the Pacific Northwest by people who drive the same trails they design for.
