Big 3 Kits
Alternator & Ground Upgrade Wiring
The Big 3 is the cheapest real gain in a 12-volt system: upgrade the alternator-to-battery positive, the engine-to-chassis ground and the battery-to-chassis ground, and the charging system finally delivers what the alternator is making.
Three kits, all cut to length with the terminals in the box: BIG3XS in 100% OFC XS FLEX, BIG3XP in OFC/CCA XP FLEX, and the BIG3RD.
3 Cables
Positive and two grounds
OFC or CCA
XS FLEX or XP FLEX
Terminals Included
Ready to bolt on
BIG3XS / XP / RD
Three kits offered
Fix The Weak Link
Factory charging wire is sized for a factory load. Upgrading all three runs lets the alternator actually reach the battery.
BIG3XS — OFC
Built with XS FLEX 100% oxygen free copper, the lowest resistance option in the lineup.
BIG3XP — CCA
Built with XP FLEX OFC/CCA cable for a lighter, lower-cost upgrade.
Bolt-On Install
Cable and terminals come together, so the Big 3 is an afternoon in the driveway rather than a parts run.
Check Your Local Dealer
Check Your Local Dealer
