Lightning Audio LA-4i

4-gauge amplifier wiring kit — includes 2-channel patch cable

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  • Lightning Audio LA-4i

    Amp Kit — 4-gauge

  • Lightning Audio LA-4i

  • Lightning Audio LA-4i

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Our take on the Lightning Audio LA-4i

by Buck Pomerantz
Lightning Audio

Power your amp and feed it signal

Lightning Audio's LA-4I 4-gauge wiring kit allows you to send power and signal to an amplifier in your car audio system safely. Along with the heavy-duty 4-gauge power and ground cables, this kit includes a 17-foot 2-channel RCA patch cable for getting the signal from your car receiver to your amp, a 20-foot remote lead, a ANL fuse holder with 80-amp fuse, and assorted hardware. All you need is speaker wire (sold separately) to complete your amp install. 

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  • amplifier wiring kit
  • 20' 4-gauge — red power wire
  • 3' 4-gauge — gray ground wire
  • 20' 18-gauge turn-on lead — blue
  • 17' 2-channel RCA patch cable
  • ANL fuse holder with 80-amp ANL fuse
  • 2 ring terminals, 2 spade terminals, a firewall bushing, and 10 cable ties
  • warranty: 1 year
  • Our 60-day money-back guarantee

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

Product Research
What's in the box?

  • 20' Length of 4-gauge power wire (red jacket)
  • 3' Length of 4-gauge ground wire (dark gray jacket)
  • 20' Length of 18-gauge remote turn-on wire (blue jacket)
  • ANL fuse holder
  • 80 amp ANL fuse (installed)
  • 17' Stereo RCA patch cord
  • 1 Plastic grommet
  • Ten 5" wire ties
  • One 7/16" crimp-on ring terminal (red sleeve)
  • One 5/16" crimp-on ring terminal (black sleeve)
  • Two 3/8" wide crimp-on spade terminals (one with red sleeve/one with black sleeve)

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.


Single Amplifier 4-AWG Kit: This kit includes the following:

  • One 20' length of 4-gauge power wire
  • One 3' length of 4-gauge ground wire
  • One 20' length of 18-gauge remote turn-on lead
  • 17' twisted pair stereo RCA patch cord
  • ANL fuse holder
  • 80 amp ANL fuse (installed)
  • One 2/3" wide, 7/16" diameter crimp-on positive ring-terminal (red sleeve)
  • One 5/8" wide, 5/16" diameter crimp-on negative ring-terminal (black sleeve)
  • Two 3/8" wide, crimp-on spade terminals (one with a red sleeve, the other a black sleeve)
  • One plastic grommet
  • Ten 5" wire ties

Fuse Holder: The fuse holder requires a 4mm Allen wrench to secure the input and output wires and 5mm Allen wrench to change the fuse. There are four holes in the base for mounting and the dimensions are approximately:

  • Length: 6" (without adding for the wires)
  • Height: 1-3/4"
  • Width:
    • Main Body: 1-3/8"
    • Base: 2-1/4"
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Lightning Audio LA-4i Reviews

Average Customer Review:

4 people say:

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5 out of 5


Written By basshead90, Midlothian, va on Friday, September 19, 2014
Awesome product. Placed my order and received it in about 24 hours. Very pleased. Made more purchases since then. All hail Crutchfield!! Lol
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4 out of 5

great kit

Written By tomtom, DMV on Sunday, August 17, 2014
Crutchfield Customer Review (What's this?)
not too much to say here about a aftermarket sub/amp install kit...the kit had everything advertised. i used it with a mtx500.1 mono amp and a JL10" 500W RMS sub. the kit does not come with speaker wire, though i already had speaker wire, so that was not an issue for me, but it's worth noting. i did need to additionally purchase a LOC (line out converter) to tap into the rear factory speaker wires to get signal for the amp. i got the Scosche LOC80 also from crutchfield. both have worked flawlessly together. i'm very satisfied. i gave 4 stars because i don't give 5 unless i can find/get the product for a slickdeal/sale.
long length of wires, included zip-ties and connectors
no speaker wire included.
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4 out of 5


Written By Anonymous, Eh, ny on Wednesday, March 26, 2014
Crutchfield Customer Review (What's this?)
Good product, no speaker wire included which bothered me. Install took less then 2 hours with sub and all.
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5 out of 5

Good product

Written By turboS40, 08520 on Wednesday, March 19, 2014
Crutchfield Customer Review (What's this?)
Everything worked fine.
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For a more in-depth review and enhanced detailed information on the Lightning Audio LA-4i, please visit the Crutchfield website product page (/ISEO-rccbcspd/p_495LA4I/Lightning-Audio-LA-4i.html ).

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