C5 BIG 3 Charging System Improvement Kit for factory top post battery

With all of the high-tech electronics that have been incorporated into your C5 Corvette, not to mention additional aftermarket electronics and stereo systems, it can take a toll on the factory charging systems ability to keep up. Especially if, over time, connections have become corroded.  Installing a BIG 3 upgrade can be very beneficial as many on the Corvette forum will tell you.

There is NO cutting or removing the factory charging system wiring.

The Big 3 cables run from the Alternator directly to the under hood Fuse box where all the engines electrical Relays and Fuses are and also directly to the Battery positive.  Combined with your factory system it more than doubles the amperage capacity. And because your Positive wires are only as good as your Ground, the kit comes with two ground cables, one that goes from the Battery to the Frame and one that goes from the Frame to the Engine.

 It is made from all high quality materials and designed so it will not look like an aftermarket universal kit. For safety it has a 125 amp heavy duty fuse, uses USA Made Flexible 4 gauge wire. (not the type car stereo shops use) The positive wires have a High-Strength Slit Corrugated Sleeving just like the factory wiring over them for additional protection and a factory look. All connections are hydraulically crimped and come with all the hardware needed to do the installation. The installation takes about thirty minutes with simple hand tools. If you have doubt that this BIG 3 kit will make any difference in your charging system, please check out our test video below and see how the voltage increases when we connect it!  Also see the Installation video below.  Available for Side Post Mounting, Top Post with factory Clamps and Top Post with aftermarket clamps.

We have a 30-day return policy, which means you have 30 days after receiving your item to request a return.

To be eligible for a return, your item must be in the same condition that you received it, unworn or unused, with tags, and in its original packaging. You’ll also need the receipt or proof of purchase. Read More

Delivery Time: All packages will be delivered within same day on most items if ordered before 2pm pt unless otherwise specified.

Order Processing: Your order will be processed for shipping within regular business days (Monday to Friday). Orders placed on weekends or holidays will be processed on the next business day.