Big 4 Power Wire Kit


13 reviews

This variant is currently out of stock

This kit is made to upgrade your factory positive and negative wires to increase your cars electrical system. By increasing the size of the wire, it will raise the alternators output voltage which will improve everythings performance that uses the 12 volt system. For example, ignition, steering, stereo, headlights, etc. When we installed this on our shop Sonic it bumped the voltage .3, other people have reported more. We are not tricking the alternator to put out more voltage, we are just allowing the full voltage from the voltage regulator to make it to the fuse panel and battery. Whatever output voltage you have must have a better ground as well, so we include 2 upgraded ground wires as well.

The Cruze comes with 1 less wire than the Sonic.

Customer Reviews
4.8 Based on 13 Reviews
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Edward L.
United States United States
4 power wire upgrade kit

Great product, connections are good, wire gauge is excellent size. Install was a bit annoying for a sonic the alternator wire was a bear to replace the upgraded wire, but overall definitely worth the time to buy and install, benefits include more equalized voltage/ohm distribution, better interior/exterior lighting(no more flickering or dimming), better electrical voltage/ohm ouput to the engine and fuel sensors, seems to be better throttle responsiveness and better electrical flow to the fuel injectors as well(did a voltmeter and ohm test) improved the injector performance by 28%

HmH Auto. christian castellano
United States United States

Quality parts and fast service

United States United States
4 awg not 0 awg

A big 3 upgrade should be 0 gauge wire nothing else, this is 4 gauge so watch out if you want 0 gauge, bass head stand point. Otherwise clean wires, good length and seemed easy enough of an install.

Brandon C.
United States United States
Big 3 Power Wire Kit

So far so good.

Alan B.
United States United States
2012 Cruze 3 Wire set

No problems with install. The wire lengths on my Cruze were appropriate and with a bit of care during routing you won't even know they are on the car.