If you"re a car audio enthusiast, eventually your sound system will reach the point where it is too powerful for your vehicle"s existing electrical system. The first step in upgrading your power system should be a Big 3 Upgrade, and there is no better Big 3 kit than Recoil RBG3PK. Our Big 3 Upgrade kit is specifically designed to help your old electrical system cope with the demands of your fantastic sound system and help with those annoying dimming headlights when your sound really kicks. Our kits are engineered from the highest quality materials to ensure long lasting durability. Included with the kit are the battery ground to chassis wire, the chassis to engine block wire and the alternator positive to battery positive wire as well as the clamps, screws and copper ring terminals necessary with this installation. It allows your electrical system to run at its maximum efficiency while also allowing your amps to run cooler and subs to hit harder.