Toyota 4Runner Big 7 Battery Cable Kit (Gen 4 – 2003–2009)
Your fourth-gen 4Runner is a legend on and off the trail, but even the toughest rigs have a weak spot. Factory wiring wasn’t built to handle winches, lights, fridges, or multiple high-draw accessories. The Big 7 Kit upgrades that weak link with the heavy-duty power your 4Runner deserves.
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 upgraded runs to the starter and fuse relay box, routed cleanly with labeled cables for a straightforward, frustration-free install.
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 built to handle mud, water, and heat
Clearly labeled cables for a clean, organized install
Ready for 4Runner Duty
This 1/0 GA Big 7 Kit is built for the 2003–2009 Toyota 4Runner, delivering reliable voltage, faster starts, and stable accessory performance on the trail, overland, or at camp.
Proudly made in the Pacific Northwest by off-roaders who use their rigs as hard as you do.
