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 250 amps, this "Big Three" grounding kit will boost your electrical system's performance.
XS Power's Big3XP kit includes heavy-duty 1/0-gauge copper-clad aluminum 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
This Big3XP 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 terminals (already crimped on the wires)
- 10 wire clamps
- 10 zip ties
- 10 screws
Warranty: 1 year
What's in the box:
XS Power BIG3XP owner's manual
- One 6-foot XPFLEX 1/0-gauge power cable with ring terminals on both ends (blue)
- Two 4-foot XPFLEX 1/0-gauge ground cables (black)
- 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
Featured review
This worked great on my 95 chevy silverado with the stock alternator.
domi from san jose
Customer Q&A
Q
Do I need to remove factory connections or can I just leave them as is and just add the Big3 cables?
A
You can leave as is and just add the Big3 cables.
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REVIEWS
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XS Power BIG3XP reviews
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san jose
domi from san jose on 7/8/2019
This worked great on my 95 chevy silverado with the stock alternator.
Pros: Great voltage and no electric problems
Cons: None.
1 of 1 found this helpful
XS Power BIG3XP
Crutchfield customer from Sapphire, NC on 5/5/2019
Great product. Great price and fast shipping. Would recommend Crutchfield and xs power to anyone at any level audio build
Pros: Detailed description got exactly what it described woth plenty of extra fittings.
Cons:
0 of 0 found this helpful
XS Power BIG3XP
Crutchfield customer from Somerton, AZ on 4/30/2019
0 of 0 found this helpful
XS Power BIG3XP
Crutchfield customer from Fox Lake, IL on 3/26/2019
1 of 1 found this helpful
Perfect for my application
Felix from San Antonio, Tx on 1/9/2019
Lengths of the cables were perfect for my 2013 F-150 SCREW.
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0 of 0 found this helpful
XS Power BIG3XP
John from Montgomery, AL on 1/8/2019
Great product .fit my need all hardware was ship also thanks crutchfield will order more soon
Pros: Great product
Cons: None
0 of 0 found this helpful
Great product
Francisco from Phoenix, AZ on 11/26/2018
Great product. Seems to be working just fine. No problems. I would recommend.
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0 of 0 found this helpful
Electrical system on beast mode
Justin Stearns from Richmond, VA on 10/27/2018
Great product, easy install, plenty of length for the wire runs. Went in with a high output alternator and I couldn't be happier with the performance.
Pros: Easy install, great performance, everything you need in one kit
Cons: None
0 of 0 found this helpful
Best Cheap Audio Upgrade
Ashton from Merrimac, WI on 7/1/2018
Was nervous that this upgrade was going to be very hard to do and beyond my limits and knowledge. But along came Crutchfield to the rescue! Amazing price... amazing verity of options... and like always, amazing tech support and full, clear instructions on installing my "Big 3 Upgrade". Highly recommend this for anyone adding or upgrading to a sub/amp combo with more than 500w RMS of power because more than likely your vehicle's alternator will be stressed adding this much power to the electrical system. I added this Big 3 Upgrade after hearing all of the benefits that it comes with. I upgraded my system with 2 Kicker 12" L7S Solo Baric's and Kicker CXA1800.1 Mono Sub amp which is 1800w RMS. I'm very happy with my purchase and again HIGHLY RECOMMEND this from Crutchfield for all the obvious reasons but also because you know Crutchfield will supply you with excellent tech support if needed like I did!
Pros: Able to draw more power from alternator. Easy installation. High quality materials and wires came pre-crimped.
Cons: None.
0 of 0 found this helpful
XS Power BIG3XP
Crutchfield customer from Sturgeon, MO on 6/11/2018
High quality wire. Works well the H.O. alternator. Highly recommend
Pros: Very flexible
Cons: None
0 of 0 found this helpful
Buy it, it's worth every cent
Nolan John from Cannon Falls, MN on 6/2/2018
This kit is no joke whatsoever. My 16 year old alternator couldn't handle the power draw and crapped out. I'm not happy about NEEDING a new alt, but love that I have an excuse to throw a HO one in!
Pros: Fun to install Massive Wire Crutchfield themselves
Cons: I need a new alt I blew my 80 amp fuse:(
0 of 0 found this helpful
XS Power BIG3XP
James from Fresno, CA on 5/26/2018
Another great product from Crutchfield. I also really like the look of the wire. I thought the wire sheathing might be opaque from the images here, but it's a really nice translucent sheath like most other power wire. Can't wait to get it installed.
Pros: Great wire for the price
Cons:
0 of 0 found this helpful
XS Power BIG3XP
Crutchfield customer from Cape Girardeau, MO on 2/20/2018
The quality surpassed any of my expectations and very easy to install. I recommend to anybody looking to decrease voltage drop.
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2 of 2 found this helpful
Great wires!
Dominic from Virginia Bch, VA on 2/19/2018
Nice CCA wire! Very well crimped and heat shrunk. Generous lengths.
Pros: Ready to install
Cons: Doesn't come with a fuse.
0 of 0 found this helpful
XS Power BIG3XP
Crutchfield customer from Yorktown, VA on 2/11/2018
0 of 0 found this helpful
XS Power BIG3XP
Nicholas from Ogden, UT on 2/6/2018
Excellent kit, and came exactly as described. All cable lengths were perfect for the job! Would have needed more lugs for stock battery terminals, but I upgraded those as well.
Pros:
Cons: Almost every zip tie in kit broke when trying to use.
0 of 0 found this helpful
Just what I needed
Arthur from Chesapeake, VA on 2/4/2018
Was more than enough to do what I needed on my 04 Focus. Was very pleased with the quality of the kit and all the accessories for securing the wire.
Pros: Plenty of wire and flexible enough for easy routing.
Cons: Power wire isn't red. Would have needed one more lug if I had the stock battery terminals still at least on my car.
0 of 0 found this helpful
Great upgrade kit
Pete from Omaha, NE on 11/12/2017
This big3 kit was a great product. The wires were long enough to Route Around the engine bay and bolt down. The wires are also easy to bend which helped quite a bit.
Pros: All the terminals were on the wires, and the wires were almost the perfect length maybe just a little long.
Cons: None.
0 of 0 found this helpful
SUPER VOLTAGE
JULIO from Newark, NJ on 8/6/2017
Gives my car more voltage for my system. I've tired other products and nothing. But this OMG the best.
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2 of 2 found this helpful
XS Power BIG3XP
Crutchfield customer from East Falmouth, MA on 8/3/2017
The wires come clamped and ready to used. They're just the right lenght for my application.thanks again Crutchfield for coming through with a great product and even a better service!!
Pros: Easy install
Cons:
2 of 2 found this helpful
Big 3 kit
Crutchfield customer from Conneaut, OH on 5/28/2017
0 of 2 found this helpful
Clean and performs as expected
John from Spring Valley, NY on 5/26/2017
Everything just installed easily, voltage is better all around, replaced 30 year old cables.
Pros: Easy install plenty flexible great length
Cons: none
1 of 2 found this helpful
XS Power BIG3XP
Crutchfield customer from Grand Junction, CO on 5/2/2017
Exactly what I needed. Got them earlier than said.
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0 of 2 found this helpful
XS Power Big 3 1/0 gauge.
Ben from Asheville, NC on 3/13/2017
Everything you need in a big 3 kit. Cables have plenty of length. The extra terminals are nice since I had to shorten two wires.
Pros: Very flexible cables. Easy to install and route within the engine compartment.
Cons: None
1 of 2 found this helpful
XS Power BIG3XP
Crutchfield customer from Bryant, AR on 3/10/2017
Easy to install and comes with everything you need! Would recommend!!
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0 of 2 found this helpful
XS Power BIG3XP
Crutchfield customer from Vernon, TX on 3/5/2017
Great product, all the ends came crimped. More than enough length to run wherever you need. A couple extra crimps in case you decide to cut any of the cables
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1 of 3 found this helpful
Great Kit
Laz from Naples, FL on 11/13/2016
The wires came clamped and everything ready to put on. Great Kit!
Pros: Wires Clamps Zip Ties
Cons: Nothing
1 of 3 found this helpful
Big 3 Power Cables
Jaymie from Bronx, NY on 9/29/2016
These are quality cables, they're just the right length for my application. This kit comes with most accessories you need for an install except a cutter & crimp tools. Would recommend this for someone who upgraded their car stereo.
Pros: Great quality, most accessories included for install. Good looks.
Cons: None
2 of 3 found this helpful
Xs big three upgrade kit
Crutchfield customer from Livonia, Mi on 7/27/2016
Very easy to work with the 1/0 gauge wire and it come pre crimped which is nice. Had to cut the power wire since my cars engine bay required only 2 ft from the battery to the alternator but with the right tools it's a breeze. All around great product for the money.
Pros:
Cons: None
2 of 2 found this helpful
XS Power Big3XP review
Jeremiah C from Lake Charles, LA on 7/26/2016
This item shipped directly from the manufacturer and Crutchfield had no communication as to whether it had shipped or not. I called XS Power and they didn't know about it but said they would call me right back. The next day I called them to get a status and XS Power stated that it was shipping from another warehouse and they were waiting on confirmation. It was finally shipped and arrived a few days later. Everyone I spoke with was very cordial. The product itself was exactly what I needed. The only problem is it cut out my sensor for battery fault. No big deal. I would recommend this product.
Pros: Large enough gauge wire to not hinder a large alternator, easy to install after you chase down existing charging cables.
Cons: Not really any Cons per say, could have come with a battery terminal and a way to connect sensor.
2 of 3 found this helpful
Bad @$$ 1/0 gauge wire
Tater from Southgate on 7/26/2016
This is a great deal??I mean it was well set up with alot of extras.Thanks again Crutchfield for coming through with a great product and even better service!!
Pros: Everything about it!!!
Cons: None
1 of 2 found this helpful
easy-peasy
lumpy from Sunland, CA on 7/20/2016
great kit for setting up your vehicles electrical system. the wire is easy to mold and run and with the extra ring terminals (you must have your own crimper) can make a really clean install.
Pros: plenty of wire, extra ring terminals and heat shrink.
Cons: could use a bit larger tie-wraps.
1 of 2 found this helpful
XS Power BIG3XP
Donald from Rochester, NY on 5/21/2016
Very High Quality Wire. Ends already crimped on. The Ground wires in Toyota are Crap. Just upgrading the ground wires has made the electrical system 95% better.
Pros: High Quality Wire.
Cons: The Power wire from Alternator to battery not long enough to go around the front of the radiator to the battery. This is how the stock wire is routed. Just have to route it differently.
5 of 5 found this helpful
Great Wires
Weifan W. from Virginia on 7/4/2015
The wires are quality. They were really flexible so installing it made it really easy on my 2012 Mazda 3. The 2 Ground cables were really long for me though so I had to cut one of them in half but that's not a complaint. It left me plenty of spare wires if I decide to ground other things in the engine. Overall if I had to buy it again I would.
Pros: Long Wires, Quality build, and Easy Install
Cons: None
6 of 6 found this helpful
nice product
kmack24 from the Washington, DC Area on 4/9/2015
Nice product, does the job that's all I could ask for :)
Pros:
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0 of 3 found this helpful
big 3
jeremy52 from panama city beach florida on 3/2/2015
I would give it 5 stars but I have not hooked it up yet. Just looking at it I am happy with the quality. I was hoping the connections would be soldered but they are clamped great either way. I was also worried about cable lengths but getting it I have realized the cables are plenty long. I may change a ground out to be the power so my final ground can reach my frame.
Pros: Very strong connections for being clamped, definetly true gauge wire and it comes with plenty of cables.
Cons: Connections clamped and not soldered.
6 of 8 found this helpful
XS Power BIG3XP
Crutchfield customer from Akron, OH on 11/15/2014
0 of 1 found this helpful
Good quality
JimmyB from Minnesota on 10/28/2014
I haven't installed the kit yet but it all looks like very good quality. I'm sure it will work great. Thank you.
Pros:
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0 of 2 found this helpful
Big 3 Wiring Kit
C from Foristell MO on 7/17/2014
I have a 1,200 watt amp running two Kicker Comp R's in my 2003 Accord. I realized that my amp was drawing too much power from my car and I had a slight fear that my alternator might go out. So I purchased this wiring kit which is 0 gauge wire. Easy install. Now I'm able to turn my gain up a little more and don't have to dealneith dimming lights. I recommend this product.
Pros: Easy install.
Cons: None
3 of 5 found this helpful
Great Product
BenD from Indianapolis, IN on 5/5/2014
This product took longer than expected to install just because of my vehicle type, Jeep, but once on, it works great.
Pros: Ease of use, Price, Works great
Cons:
1 of 3 found this helpful
Very good, but I had to make adjustments
Crutchfield customer from St Amant, Louisiana on 4/23/2014
Everything was great the only thing I had to so was use the longer power wire as my alternator ground to be able to run the wire in the same place as the factory. And I just used the ground that was too short as the power wire. Other than that great overall.
Pros: It helped provide plenty more power to my car!
Cons: Had to switch out the power and ground wire. Worked good still.
2 of 5 found this helpful
Good Product
Bob G from Palm Bay, FL on 4/12/2014
Nice large gauge wire, no filler insulation, it's a true 1/0 gauge. Quite flexible given it's size. Installed it in my 1983 Camaro and the amount in this kit is enough to do the Big 3 three times over on my car. I literally have about 6' of cable left over, which is a great value in my opinion. This kit also helped out with some electrical issues my car had. The tiny little factory ground and charging wire wasnt big enough and as a result, my volt meter in the car would fluctuate each time my turn signal flashed. Turn on the headlights and A/C and watch the voltage drop well below 13v. Not anymore. I can crank up the stereo (with 250w amp), all the lights and the A/C on max and the voltage doesnt move. This kit certainly does it's job.
Pros: Tons of wire with pre-crimped ends. Great Value
Cons: Needs to be cut to length and new ends either soldered on or crimped which could be difficult for someone without proper tools.
5 of 6 found this helpful
Great Kit
Wader935 from Albuquerque, New Mexico on 12/1/2013
Everything you need for the Big 3 upgrade. I had plenty of cable for my installation and had about a foot left over. Very flexible 0 guage easy to maneuver around and through tight places. One end of cable is already crimped with a ring terminal and shrink-wrapped so installation was a breeze. Although not soldered just crimped, i was skeptical if it would hold but it did. I did a pull test and crimped ring terminal did not budge. The cable is very thick and i really had to work to get it into my 0 guage battery terminal, and if you have the right wire cutters its easy to cut. Kit comes with extra ring terminals, shrink wrap and even zip ties to make the install look nice and clean. Overall i am very happy with this purchase and would definitely recommend this kit to anyone doing their own Big 3 upgrade. Thanks XS power and Crutchfield for the great price.
Pros: One end of each cable has a ring terminal already crimped and shrink wrapped.
Cons: Cable was difficult to get into my 0 guage battery terminal, but the bigger the better for this instance. I did get it to fit so not really a con just a pain.
9 of 9 found this helpful
high quality
Hameen from San Diego on 11/25/2013
needed some wires for my high output Alternator 220amp this kit is rated at 250amp so it was perfect had all the correct tools to alter the size and mimic factory length. I would however suggest soldering the crimped wire before shrink rapping. great upgrade for your sound system.
Pros: everything is included and this is a very good price for what you get. The only way to get it cheaper is to build the kit yourself
Cons: not rated higher then 250
4 of 5 found this helpful
More details on the XS Power BIG3XP
Product Research
Features
Contents: The BIG3XP kit contains the following:
- Power Wire: One 6' length of 1/0 gauge multi-strand power wire in a blue jacket (5250 strands/10% oxygen free). 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 black jackets (5250 strands/10% oxygen free). 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 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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Customer Q&A
Q Crutchfield asked: Why did you buy this?
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