KT Performance » Big 7 Kits

At KT Performance, we offer Big 7 Kits for customers who want to fix weak factory wiring and unlock the full potential of their charging and electrical systems. Big 7’s complete battery cable replacement and “Big 7” wiring upgrade kits are designed to reduce voltage drop, improve starting, stabilize idle, and better support accessories like winches, lights, audio, aftermarket alternators and tuners. Each kit is built in Washington State and uses premium fine‑strand OFC copper cable, heavy‑duty crimps and marine‑grade heat‑shrink to seal out corrosion, with labeled ends and detailed instructions to make installation straightforward for DIY owners and shops. What started in 2017 as JeepCables.com and the original Jeep Cherokee XJ “Big 7” kit has grown into a full line of vehicle‑specific battery and ground cable kits for Jeeps, Toyotas, Dodges and more—all under the unified Big 7 Kits brand. Big 7 kits typically go beyond a simple “Big 3” upgrade, adding dedicated alternator‑to‑fuse‑box protection, improved grounds and starter feeds to handle higher‑output alternators and tough off‑road conditions. For KT Performance customers chasing reliable cranking, cleaner voltage for electronics and fewer wiring headaches on older or modified rigs, Big 7 Kits deliver a clean, bolt‑in solution that is lab‑tested to exceed common UL and MIL specs.