Lightning Audio LA-4i

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

Item #: 495LA4I

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10 Reviews | 1 question - 2 answers

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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. 

Product Highlights:

  • 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

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)

Product Research


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"

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.

Lightning Audio LA-4i Reviews

Average Customer Review:

10 reviews
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Good quality kit

Written By Derek R, Pennsylvania on Tuesday, December 23, 2014

Crutchfield Customer Review (What's this?)

Each item included in this kit is very high quality. The main power wire is very flexible and has durable insulation, the insulation could handle heat a little better but it's better than a lot of the wire that I've seen. The audio signal cable is an excellent quality and is also shielded. The fuse housing is a solid investment as well. And there isn't too much to say about the on/off signal wire, but it is plenty long and that's what I needed!

Pros: Power wire is flexible and has durable insulation Audio signal cable is shielded solid fuse housing long on/off wire (~15 feet I think)

Cons: Insulation does well with heat, but could do better.

Lightning Audio LA-4i

Written By Simpdog, California on Monday, December 01, 2014

Crutchfield Customer Review (What's this?)

A quality product

Pros: Large enough power cord to hook up a separate amp

Cons: None


Written By TB, Maryland on Saturday, November 29, 2014

Crutchfield Customer Review (What's this?)

Everything you need including all the connectors & zip ties. Plenty of length for my truck install

Pros: As advertised

Cons: Notta....

Lightning Audio LA-4i

Written By Jeromy, Chicago, IL on Thursday, October 16, 2014

Crutchfield Customer Review (What's this?)

Decent for price

Pros: Price is good and works great for the job.

Cons: Fuse is very large and difficult to hide efficiently. I would expect this from a 120+ amp fuse but not an 80

Easy as it can be

Written By Anonymous, San Diego, CA on Sunday, October 05, 2014

Crutchfield Customer Review (What's this?)

Great length of wire and plenty of extra left over. Perfect kit with my amp.

Pros: Everything

Cons: None

Lightning Audio LA-4i

Written By Anonymous, Cville on Saturday, October 04, 2014

Plenty of wire

Pros: Plenty of wire

Cons: None


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

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.

Pros: long length of wires, included zip-ties and connectors

Cons: no speaker wire included.


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.

Good product

Written By turboS40, 08520 on Wednesday, March 19, 2014

Crutchfield Customer Review (What's this?)

Everything worked fine.

Questions & Answers Ask the community. Share your knowledge.

1 question already asked

Stranded copper. I never even used the included L/R audio cable. I ran my lightning amp as 5 channel. The lightning 5 channel amp is amazing if you are looking for a great price and want a nice solid sound, and not just some crappy bass thumper. So with what's included in the kit is ONE set of L/R analog cable. It worked great for me. Just finding a place for the fuse holder was a problem. Honda Ridgeline. Very tight engine cabin [ justyn  Oct 29, 2014 ]
stranded copper. very flexible. works fine. soft rubber coating. can be gouged easily with sharp metal things, but I'm a welder and my standard of comparison is 1/0-3/0 black jacket welding cables. should do great for regular stuff. my amp is old school with 90a fuse and I don't push it and have the safety fuse at 80a and cable works fine even in DC heat. [ ADAM  Oct 27, 2014 ]

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