This upgraded battery cable kit replaces old worn out battery cables for more power and better performance from your vehicle.
What's the Big 7 Complete Kit?
The "Big 3" (or sometimes called "Big 4") upgrade means improving the current capacity of three cables: 1) alternator output to battery positive, 2) battery negative to frame/body, and 3) engine ground to frame/body. We don't stop there though. Our "Big 7" kits also include the leads to the starter and the fuse relay box, as well as adding an external fuse to avoid routing the increase in current capacity through the smaller fuse box wiring.
What makes these cables so special?
We're nerds for specs and finer details around here. None of that CCA (copper-clad aluminum) that's used in inferior products, or stereo installations. We only use fine-strand, SAE (Society of Automotive Engineers) approved, pure copper cable. Then using a powerful electromechanical crimping machine, we crimp each solid-copper end, and finally finish the construction by adding a environmental seal made of marine grade heatshrink meeting MIL-I-23053/4. Also included are military style corrosion resistant battery connections and a MEGA fuse and holder. To make the entire install simpler, every end will be labeled for ease of installation.
Do I need a bigger alternator to run these cables?
No. Every vehicle can benefit from our "better than factory" cables. The years, along with environmental damage from rain/salt water/corrosion, can greatly impact your electrical system. Our customers have consistently reported that their vehicle starts faster, charges the battery better, and many times cured electrical gremlins that were brought on by compromised wiring.
I've changed my mind! I want to run a bigger alternator!
Perfect! You're probably running a power inverter, a stereo, a winch, an under hood welder, or flux capacitor. These all require more amperage than the stock alternator is capable of providing. Maybe you're not running any of these yet, but considering it, these cables will get you ready!
2GA or 1/0 GA? Which to choose?
As far as 2GA vs 1/0 GA, it's really going to depend on what mods you're going to do to. If you're staying stock, then 2GA is plenty, but if you're looking at modifying it down the road (winches/lights/etc) and want to future proof, then you want Toyota 4Runner Big 7 Battery Cable Kit (Gen 4 - 2003-2009). .
These aren't just any old 4Runner "big 3" cables, these are the "Big 7" from ToyotaCables!
Replaces 82122-35A70 & 82122-35A80
Materials
Our Big7 Kits are built with 100% fine strand SAE rated pure copper wire and a flexible J1127 jacket. Ends are crimped with a gas-tight electromechanical crimp rated for 700lbs of pull force. Protected by marine grade heatshrink for corrosion resistance.
Kit Includes
This All-In-One Big7 Battery Cable Replacement Kit includes everything you need to replace your old worn out cables and battery terminals. Each kit include vehicle specific replacement wires, battery terminals, heatshield where needed and protective wrapping as needed.
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Toyota FJ Cruiser Big 7 Battery Cable Kit (2007–2014)
This has to be one of the best upgrades I have made to my 07 FJ Cruiser. I was just looking to add more current to run my light bars, fog lights, and sound system without my lights dimming or losing power. I was shocked to find that along with all that, my motor has more power when accelerating and a smoother power delivery overall. Very pleased with everything, with the exception of instructions? They don't exist... If not for youtube and other FJ content creators the install would have been very difficult to figure out. Also for the FJ, it should only be a big 6 kit. The fuse box wire is extremely difficult to remove and from the look of size of the wire, it looks to be the same gage. I highly recommend the Big 7 Kit for performance and I also recommend them giving instructions of an FJ not just a JEEP..........
J
Jon T.
I went with the 1/0 gauge upgrade for the Toyota FJ Cruiser. The cables are robust and very well made (quality craftsmanship). Cable lengths are appropriate but not perfect, however this is partly due to the increased volume of the cables within the tight cable run space. My sole criticism (as this is a custom product) is the cable connectors at the engine block ground point. This kit requires two cables be placed at the engine block ground point, but the cable girth does not allow doubling up of the cables without twisting one cable to be looped from the opposite side. This in turn reduces available cable length and puts undue stress on the looped cable. If one of these cables had a longer or differently shaped connector that allowed easy overlap it would be helpful.
Get Creative
We offer tech flex wrap in 17 different colors to customize your Big7 Battery Cable Kit.
Full battery cable replacement kits for restored power and increased power capabilities for Jeep, Toyota, Dodge & More!
At Big 7 Kits, we build battery cable replacement kits that are tough, reliable with labeled ends for easy install. Made with premium fine-strand OFC copper wire, heavy-duty crimps, and sealed with marine-grade heat shrink, our kits are built to outlast and out perform. You’ll get everything you need in one kit and a solid warranty to back it all up. It’s power you can trust—built the Big 7 way.
Testimonials
Testimonial
Everything was great. The cables were all labeled clearly, they were the correct lengths, and the terminal ends fit perfectly. The battery terminals are well made, and make disconnecting the cables quick and easy. Overall, a definite improvement over the factory cables and terminals. Great product!
Eric H.
Jeep Cherokee XJ Kit
Testimonial
The ends of each wire being labeled really helped out. Good quality stuff. Seems right. Definitely fixed my original cables that were so corroded the insulation was cracked and falling apart.
Joe A.
Dodge Cummins Gen 3 Kit
Testimonial
I bought the 1/0 GA kit, easy install. Be careful with the plastic white bracket under the the front of engine block (going to starter). Slow and steady. Sturdy kit, well made and easy to install. Give them a call or shoot them an email, the customer service team here is really helpful and will answer your questions. Paul was ready to help!
Liam S.
Toyota 4Runner Gen3 Kit
1 / of3
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