Jeep Wrangler JK Big 7 Battery Cable Kit (2007–2018)
Your Jeep Wrangler JK wasn’t built for the mall crawl—it was built for mud, rocks, and backcountry adventures. But when you start adding winches, light bars, fridges, and radios, that stock wiring harness just can’t keep up.
The Big 7 Battery Cable Kit is the fix. Designed specifically for 2007–2018 JK Wranglers, this kit replaces your tired factory wiring with premium, high-conductivity cables that deliver consistent power where it counts. Available in 2 GA, 1/0 GA, or 2/0 GA, you can match the kit to your rig’s electrical demands—whether you’re running a couple of accessories or a full overland command center.
The result? Faster starts, brighter lights, smoother winching, and a Jeep that keeps powering through when others sputter out. Built tough for easy installation, these cables are ready for trail abuse and long-haul reliability.
What’s the “Big 7” Upgrade?
Most folks know the “Big 3” upgrade:
Alternator output to battery positive
Battery negative to frame/body
Engine ground to frame/body
Big 7 takes it further. Their kits add heavy-duty leads to the starter and fuse relay box, plus an external ANL fuse to protect the system from overload. More connections, more reliability, less chance of getting stranded.
Built to Outlast the Trail
100% Pure Copper Cable – No cheap copper-clad aluminum here. Big 7 only uses SAE-approved fine-strand copper for maximum conductivity.
Solid-Copper Terminals – Machine-crimped for strength, then sealed with marine-grade heat shrink for weatherproofing.
Military-Style Battery Clamps – Corrosion-resistant, rugged, and built for the long haul.
Easy Install – Every cable is clearly labeled so you spend less time guessing and more time wheeling.
Do You Need a Bigger Alternator?
Nope. Big 7’s cables outperform factory wiring even with your stock setup—faster starts, stronger charging, and often fixing electrical gremlins caused by age and corrosion.
