Yes. The “Big Three” or “Big 3” is car audio slang for upgrading the charge lead from the alternator to the battery, upgrading the ground from the engine to the battery, and upgrading the ground from the battery to vehicle chassis. The idea is to improve the performance of your charging system with respect to your audio system as well as pave the way for the installation of a high output alternator. Our Big Three Upgrade Kits are the best that money can buy.
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