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XS Power BIG3XS

350-amp Big 3 wiring upgrade kit

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  • XS Power BIG3XS

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Our take on the XS Power BIG3XS

by Jon Paulette
XS Power

The one-step "Big 3" upgrade kit

 If your aftermarket audio system is putting a strain on the rest of your car's electronics, you might want to upgrade your factory wiring. Rated to 350 amps, this "Big Three" grounding kit will boost your electrical system's performance.

XS Power's Big3XS kit includes heavy-duty 1/0-gauge oxygen-free copper cables that replace (or augment) your vehicle's battery ground-to-chassis wire, the chassis-to-engine block wire, and the wire connecting the alternator's positive output to the battery's positive terminal.

Another bonus is that the 8.5 mm ring terminals are already crimped to the wires, so you won't have to replace the stock grounds unless you want to improve them or double up. Extra ring connectors are included, so you'll be able to trim the wires to length and replace the terminals if needed.

The Package

The 350-amp Big3XS kit includes: 

  • 1 6-foot XPFLEX 1/0-gauge power cable
  • 2 4-foot XPFLEX 1/0-gauge ground cables
  • 8 XS Power heat shrink tubes
  • 8 1/0-gauge crimp  crimp terminals (already crimped on the wires)
  • 10 wire clamps
  • 10 zip ties
  • 10 screws
Warranty: 1 year See more info on this item

Hands-on research from the Crutchfield Labs (what are the Labs?)

Product Research
What's in the box?

Download owner's manual

  • One 6-foot XSFLEX 1/0-gauge power cable with ring terminals on both ends (blue)
  • Two 4-foot XSFLEX 1/0-gauge ground cables (pearl)
  • Two extra 1/0-gauge crimp-on ring terminals
  • 2 Heat shrink terminal protection tubes
  • 10 wire clamps
  • Ten 3" Zip-ties
  • Ten 1/2" Self-tapping screws
  • Instructions on the box

Our Product Research Team

At Crutchfield, you'll get detailed, accurate information that's hard to find elsewhere. That's because we have our own in-house Product Research team — they open the box, verify contents, check the owner's manual, and record dimensions, features and specs. We stay on top of new products and technologies to help people make informed choices.

Features

Contents: The BIG3XS kit contains the following:

  • Power Wire: One 6' length of 1/0 gauge multi-strand power wire in a blue jacket (4704 strands/100% oxygen free copper ). Both ends have ring terminals attached; 0.715" wide and 0.330" inner diameter.
  • Ground Wires: Two 4' lengths of 1/0 gauge multi-strand ground wires in translucent pearl colored jackets (4704 strands/100% oxygen free copper). Both ends of each wire have ring terminals attached; 0.715" wide and 0.330" inner diameter.
  • Installation Accessories:
    • Two additional 1/0 AWG crimp-on ring terminals
    • Two XS Power heat shrink tubes (used with the extra ring terminals to protect exposed surface)
    • Ten wire clamps
    • Ten 1/2" Self-tapping screws
    • Ten 3" Wire ties
 
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1 question already asked

On my 2008 impala it is a pcm controlled voltage. And there is a sensor near the battery that controls the voltage will I need to run the 0 gauge wire through that? [ Cody  May 28, 2014 ]
1 answer
  • I'm not sure I took mine to a shop and got it done. Sorry I can't help you. [ Rob   May 29, 2014 ]

For a more in-depth review and enhanced detailed information on the XS Power BIG3XS, please visit the Crutchfield website product page (/ISEO-rccbcspd/p_122BIG3XS/XS-Power-BIG3XS.html ).

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