Seller notes

This voltage booster corrects your alternator output by approximately 1/2 to 3/4 of a volt. It will force the alternator to output between 14.1 and 14.7 volts to correctly charge and manintain AGM Batteries brands such as Odyssey, Optima, Nothstart, etc.) Simply replace the ALT-S fuse in your front fusebox with this booster and retain your factory fuse protection. Verified to work with: 2003-2009 4Runner This will only work with MINI FUSE - it will not work with other makes/ models/ years not li...

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