About the EFX PA4BX Wiring Kit
Written by Crutchfield's Buck P.
Get the right wire for your amp
The PA4BX wiring kit from EFX will supply your car amplifier with the wiring necessary for receiving its signal and powering up. The 4-gauge power and ground cables ensure that your amp gets all the power it needs to play music at its full potential. The ground cable features EFX's Ultimate Ground Terminal, which attaches to your vehicle's chassis by way of 3 self-tapping screws (included) to make sure you get a tight physical and electrically secure ground connection.
Get the right wire for your amp
The PA4BX wiring kit from EFX will supply your car amplifier with the wiring necessary for receiving its signal and powering up. The 4-gauge power and ground cables ensure that your amp gets all the power it needs to play music at its full potential. The ground cable features EFX's Ultimate Ground Terminal, which attaches to your vehicle's chassis by way of 3 self-tapping screws (included) to make sure you get a tight physical and electrically secure ground connection.
This wiring kit works with amplifiers with between about 450 to 1100 watts RMS of total output power. Please check your amplifier's installation instructions to confirm the proper size wire to use. The kit includes a stereo RCA patch cable, remote turn-on lead, in-line fuseholder, fuse, and an assortment of connectors and hardware to help with your amp's installation.
This wiring kit does not include speaker wires. You will need to purchase those separately, in order to complete your amplifier installation. This kit includes patch cables for a 2-channel or mono amp — you'll need to add cables for multi-channel amps.
Product highlights:
- amplifier wiring kit with power, ground, and audio connections
- 17-foot blue 4-gauge power cable
- 2-foot black 4-gauge ground cable with Ultimate Ground Terminal
- 17-foot blue remote turn-on lead
- 17-foot twisted pair RCA patch cable
- 100-amp fuse and in-line fuse holder
- 6 feet of flex loom
- assorted mounting screws, crimp-on connectors, and wire ties
- warranty: 90 days (no warranty on fuses)
- Our 60-day money-back guarantee
- MFR # EFXPA4BX
What's in the box:
EFX PA4BX Wiring Kit owner's manual
- 17' Length of 4 AWG blue power wire with in-line Mini-ANL fuse holder and ring terminal
- 2' Length of 4 AWG black ground wire with Ultimate Ground Terminal
- 17' Length of blue 18 AWG turn-on wire
- 17' Length of Core-Twisted RCA interconnect cable (2 male RCAs on each end)
- One 100A Mini-ANL fuse
- 6' Length of black 3/8" split loom tubing
- Firewall grommet
- 2 Spade terminals for 4 AWG wire (1 red/1 black)
- 1 Spade terminal for turn-on lead
- 1 Butt connector for turn-on lead
- 2 Self-tapping screws for fuse holder
- 3 Self-tapping screws (for Ultimate Ground Terminal)
- 6 Plastic cable ties (length=8")
- Instructions
Featured review
Good quality wiring kit for the price
David from West Richland, WA
Customer Q&A
Q
Does this kit contain ofc copper wiring?
A
I believe so but cannot be sure. I would call into Crutchfield and have them chase
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REVIEWS
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More details on the EFX PA4BX Wiring Kit
Researched by Crutchfield's Mark G.
The EFX PA4BX Wiring Kit replaces these items:
Product Research
Features
Compatibility: The PA4BX kit is designed for amplifiers with fuse ratings up to 100 amps.
Kit Contents: This amp wiring kit includes the following:
- Power/Ground/Remote wire: The power/ground wires use OFC
(oxygen-free copper) for high-current delivery. The wires use fine strands
of copper and soft-touch insulation for maximum flexibility.
- 17' length 4 AWG blue power wire with in-line Mini-ANL fuse holder (no fuse installed) and a ring terminal (0.314" inside diameter, 0.66" outside diameter)
- 2' length 4 AWG black ground wire with patent-pending Ultimate Ground Terminal for reliable ground connections.
- 17' length of 18 AWG blue turn-on lead
- Fuse: One 100A Mini-ANL fuse
- RCA Patch Cable: 17' Core-twisted stereo RCA interconnect cable with split-top center pin and segmented shield for maximum contact and connection reliability. Twisted pair construction gives you maximum noise rejection and better sound quality. The RCA plugs have a micro barrel design and integrated strain relief.
- Connectors: The kit includes
the following crimp-on terminals:
- Two 8-gauge crimp-on spade connectors (with 1 red and 1 black rubber insulator boot)
- One 18-gauge crimp-on spade connector with red plastic boot (for remote turn-on lead)
- One 18-gauge crimp-on butt connector (for remote turn-on lead)
- Mounting Accessories:
- 6' length of 3/8" diameter split loom to protect cables
- 2 Phillips-head self-tapping screws (for securing the fuse holder)
- 3 Phillips-head self-tapping screws (for securing the Ultimate Ground Terminal)
- Plastic firewall grommet (0.406" inside diameter, 0.5" outside diameter)
- Six 8" plastic wire ties
- Instructions
The EFX PA4BX Wiring Kit replaces these items
Power and signal connections for your new amp
- 4-gauge power and ground cables
- 17-foot stereo RCA patch cable
- fuse holder w/ 100-amp fuse
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Customer Q&A
Q Crutchfield asked: Why did you buy this?
A
Suggestion from advisor
[ Nathaniel Dec 23, 2019 ]
A
Kit was recommended by Crutchfield and I've learned to trust their advice.
[ Jess Nov 04, 2019 ]
A
To power the amp duh
[ Brandon Oct 06, 2019 ]
A
I was a first time shopper and the tech support helped me choose this wiring kit after I provided my specific amp type!
[ zachary Aug 04, 2019 ]
4 questions already asked
Q
Do I need this kit if I'm purchasing a self-powered subwoofer?
[ George Aug 14, 2016 ]
3 answers
A
That looks to be an install kit for the sub. Unless you already have all the necessary wires to connect the sub to power/ground and the rca cables to the deck then this looks to be a good kit.
[ Scott Aug 16, 2016 ]
A
You do not need it but you will need a power supply line with fuse, an equal sized ( meaning wire thickness)negative wire, a set of RCA converter to wires since this does not have rca inputs. Kicker sells that
[ JOHN Aug 16, 2016 ]
A
Whether it is self-powered or a separate amp, you still need to get suitable power and signal to it. If your self-powered amp comes with a power line, fuse, and signal wires then no. But I would think you would need it!
[ ROBERT Aug 16, 2016 ]
Q
What is the outside diameter of this 4 gauge wire? Coating and all. Whole diameter.
[ Frank Feb 26, 2016 ]
1 answer
A
We do not have the specific diameter of the cable with jacket specification you've requested. It's also not provided in the manual. If you must have this dimension ahead of time, you can try contacting Scosche directly: 800-363-4490
I hope that helps!
My Bio:
http://www.crutchfield.com/Support/Bio.aspx?bio=5
[ Ryan Mar 02, 2016 ] Staff
Q
Does this kit contain ofc copper wiring?
[ LKNLover Jun 27, 2015 ]
4 answers
A
I believe so but cannot be sure. I would call into Crutchfield and have them chase
[ TRACY Jul 01, 2015 ]
A
Yes, I am using two of these wiring kits, one for my JL JX500/1D amp that powers my JL TW1 10" sub and one for my JX360/2 amp that powers my JL C2650. I've had them installed for over a year now and I am very happy with this product, it comes with everything you need for the install. I switched out the fuses to T-SPEC V8 Mini-ANL Fuses because the kit comes with 100A fuse and I wanted to go with something closer to what the amp was rated for.
[ Thomas Jul 01, 2015 ]
A
yes and I have installed two of these wiring kits in my car one for the amp that powers my sub and one for the amp that powers my speakers. I've had them installed for over a year now and had no issues. very happy with the performance of this prodict.
[ Thomas Jul 01, 2015 ]
A
Yes it does.
[ Edward Jun 30, 2015 ]
Q
Is this Copper Clad Aluminum (CCA) or Oxygen Free Copper (OFC) wiring?
[ Leandro Mar 01, 2015 ]
4 answers
A
I am not sure. I bought this product in August of last year. It is a great product and have had no issues with it. I am running an Infinity 4 channel amp on it for my 4 Infinity door speakers. I love buying from Crutchfield because they offer good customer support. I would contact tech support through chat or phone. They can easily answer thus question. I am sorry I could not be more helpful
[ Matthew Mar 02, 2015 ]
A
The power and ground cable is copper. Not sure about the rca cables.
[ HENRY Mar 02, 2015 ]
A
Gosh I have no clue. But it has functioned fine
[ Jcombs111 Mar 02, 2015 ]
A
I do not have an answer to what type of copper this is but I do know that this wiring kit is amazing. Extremely easy to wire and very reliable. I ran into zero issues with this product. I am sorry I could not answer your original question. I do believe it is oxygen free.
[ Brendan Mar 02, 2015 ]
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