SPL Dynamics TB3 4AWG

The Big Three upgrade wiring kit.

Performing a "Big 3" upgrade on your vehicle is one way to improve the electrical system performance and its ability to supply power to your audio system. This upgrade will help any vehicle using an after-market amplified stereo system and is advised for amplifiers over 500W.

The "Big Three" upgrade means improving the current capacity of three cables
1) Alternator positive to battery positive
2) Battery negative to chassis
3) Engine ground to chassis

This kit comprises all the materials required to do the upgrade. SPL Dynamics primary power wire is the choice of many hard core competitors. It is constructed of a high grade wire with a high strand count for maximum flexibility. The high gloss translucent PVC jacket is resistant to oil and extreme temperatures.

Includes all 4 Gauge & 4 Gauge Accessories :