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Crutchfield CKD4

4-gauge dual amplifier power wiring kit

Item # 007CKD4

Crutchfield's 4-gauge dual amplifier wiring kit contains the wire and hardware necessary to supply power to two...

Crutchfield's 4-gauge dual amplifier wiring kit contains the wire and hardware necessary to supply power to two...

Item # 007CKD4

In stock

About the Crutchfield CKD4

Deliver the power your amps deserve

Crutchfield's 4-gauge dual amplifier wiring kit contains the wire and hardware necessary to supply power to two amplifiers safely, efficiently, and economically. A fused distribution block helps keep your installation neat, and protects each amp from dangerous short circuits. This wiring kit does not include RCA patch cables or speaker wire. You may need to purchase those items separately, in order to complete your installation.

Deliver the power your amps deserve

Crutchfield's 4-gauge dual amplifier wiring kit contains the wire and hardware necessary to supply power to two amplifiers safely, efficiently, and economically. A fused distribution block helps keep your installation neat, and protects each amp from dangerous short circuits. This wiring kit does not include RCA patch cables or speaker wire. You may need to purchase those items separately, in order to complete your installation.

Power ratings and amp efficiency

Most amplifiers come in two distinct "Classes" of technology with different efficiencies and power wire size requirements. This Crutchfield wiring kit was designed to accommodate the energy demands of two Class AB amplifiers with a combined total output of up to 700 watts RMS — a 50 watts x 4 speaker amplifier plus a 500-watt sub amp, for example. For Class D amps, the kit will work with up to 1,100 watts RMS total output — a 75 watts x 4 amp plus a 750-watt sub amp, for example.

CTA-2015 Compliant

Crutchfield wire

Crutchfield wire is made of oxygen-free copper, with no impurities that could raise its resistance to a signal's flow or add interference. Crutchfield wire meets all Consumer Technology Association (CTA-2015) standards for size, resistance, and insulation quality.


Product highlights:

  • dual amplifier wiring kit
  • RCA cables and speaker wire not included
  • maximum power ratings (total of both amps): Class AB: 700 watts RMS, Class D: 1100 watts RMS
  • oxygen-free copper wires meet all ANSI and CEA standards
    • 17 feet (5.2m) of 4-gauge red power wire with ring terminal
    • 3 feet (0.9m) of 4-gauge black ground wire with ring terminal
    • 6 feet (1.8m) of 8-gauge red power wire
    • 6 feet (1.8m) of 8-gauge black ground wire
    • 17 feet (5.2m) of 18-gauge blue remote turn-on lead wire
  • brass mini-ANL fuse holder and two 50A fuses (100A total rating)
  • fused distribution block with one 40A and one 60A mini-ANL fuse
  • ground distribution block: two 8-gauge inputs to one 4-gauge output
  • assorted hardware
    • 6 feet (1.8m) of 4-gauge black split loom
    • 4-gauge firewall bushing
    • two 22-18-gauge butt connectors
    • ten wire ties
  • warranty: 1 year
  • Our 60-day money-back guarantee
  • MFR # CKD4

What's in the box:

  • 17' Length of 4AWG power wire (red translucent jacket and terminated with ring-terminal on one end)
  • 3' Length of 4AWG ground wire (black translucent jacket and terminated by a ring-terminal on one end)
  • 6' Length of 8AWG power wire (red translucent jacket)
  • 6' Length of 8AWG ground wire (black translucent jacket)
  • 17' Length of 18AWG remote turn-on wire (blue jack)
  • Fuse holder
  • Two 50A Mini-ANL fuses (red-installed in fuse holder)
  • Distribution block
  • 40A Mini-ANL fuse (amber-installed in distribution block)
  • 60A Mini-ANL fuse (blue-installed in distribution block)
  • Distribution ground block
  • Firewall bushing
  • 2 Butt-connectors
  • 6' Length of split loom
  • 10 Wire ties

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Crutchfield response

<< >>

More details on the Crutchfield CKD4

Mark G.

Product Research

Features & Dimensions

Power & Ground Wire:

  • Gauge: 4 AWG
    • Wire Construction: Oxygen Free Copper (1862 strands)
    • Length: 17' (Power), 3' (Ground)
    • Diameter: 0.425"
    • Terminal Type: Nickel-plated brass ring-terminal (on Power & Ground wire)
    • Terminal Diameter: Outer Diameter = 0.635", Inner Diameter = 0.315"
  • Gauge: 8AWG
    • Wire Construction: Oxygen Free Copper (735 strands)
    • Length: 6' (Power), 6' (Ground)
    • Diameter: 0.275"
    • Terminal Type: Not terminated

Fuse Holder:

  • Wire Gauge: 4 AWG
  • Fuse Type: Mini-ANL
  • Fuse Size: 50A x 2
  • Number Of Fuses: 2

Distribution Block:

  • Input/Outputs: 1 Input (4 AWG)/2 outputs (8 AWG)
  • Fuse Type: Mini-ANL
  • Fuse Size: 40A, 60A
  • Number Of Fuses: 2 (one each)

Grounding Block:

  • Input/Outputs: 1 Input (4 AWG)/2 outputs (8 AWG)
  • Number Of Fuses: 0

Remote Turn-On Wire:

  • Gauge: 18 AWG
  • Wire Construction: Oxygen Free Copper (16 strands)
  • Length: 17'
  • Diameter: 0.105"

Included Accessories:

  • Grommet: 4 AWG firewall bushing
  • Butt-connectors: 22-18 AWG butt-connectors (2)
  • Loom: 6' length of 4 AWG split-loom
  • Wire-ties: 10

Installation Notes:  

  • RCA cables and speaker wire not included (sold separately).
  • Installation tools sold separately.

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Customer Q&A

Crutchfield asked: Why did you buy this?
the customer service person said this would be a good fit for my items in my shopping cart [ andrew  May 23, 2020 ]
Best value possible. [ SHAWN  Apr 15, 2020 ]
I trust Crutchfield with all my sound and accessory needs! [ Thomas  Apr 08, 2020 ]
I want to set up 2 powered subs in my car [ Hyrum  Apr 08, 2020 ]
Quality for the price! [ Darryl  Dec 29, 2019 ]
Advisor recommended to wire two amps, subwoofer & 4 speakers. Comes with fuses and distribution terminals. [ James  Dec 09, 2019 ]
to install powered sub 10in 200w under the back seat and the 4channel 40w Pioneer Amp. [ Jason  Sep 23, 2019 ]
It's the wiring kit recommended for the amp I chose [ Brantley  Jul 07, 2019 ]
Running a dual amp, one for front and rear speakers and another for sub. This kit has everything I might need for what I'm doing for a nice price. [ Michael  Jun 23, 2019 ]
Because it can take the load of the amp [ megale  Apr 17, 2019 ]
got it before and it worked great. [ Jacob  Apr 15, 2019 ]
Rep recommendation [ Nancy  Mar 08, 2019 ]
I live in a rural area and trying to round up all the various components to install my amps is too daunting. Crutchfield offers one-stop shopping for items such as this. [ ED  Mar 04, 2019 ]
Wiring, may need 2nd amplifier [ Tony  Jan 22, 2019 ]
Its awasome [ Ryan  Jan 11, 2019 ]
The sales rep suggested this. [ Jonathan  Dec 21, 2018 ]
price and quality [ GILBERTO  Dec 06, 2018 ]
It was discounted at the time of my amplifier purchase, and included everything I need for installing the amplifiers with no extra runs to a stereo supply house. [ Jc  Dec 02, 2018 ]
Price [ Conrad  Nov 30, 2018 ]
Crutchfield tech Bernie assisted with the purchase and really helped out [ Tristan  Nov 27, 2018 ]
I real don't know the price wasn't the cheapest [ Anthony  Nov 16, 2018 ]
Great kit used on previous vehicles. [ Nelson  Nov 16, 2018 ]
Because I can [ Daniel  Oct 14, 2018 ]
Easy to work with when running cables under carpet and a decent price not overpriced [ THOMAS A  Oct 08, 2018 ]
Advisor recommended. [ Steven  Sep 27, 2018 ]
advice [ Chris  Aug 20, 2018 ]
my speakers [ nathaniel  Aug 13, 2018 ]
Looks like this kit has everything I need to hook this package up for my sons 17th birthday present in his 2011 Dodge Challenger, he will be absolutely thrilled! Thanks to cructhfeild for making it so easy. [ jason  Aug 10, 2018 ]
I trust that Crutchfield has recommended a kit that fits my needs. [ ANTONIO  Jul 26, 2018 ]
Its gonna power both my speaker amp and my sub amp and be a lot cleaner than running two different power supplies. [ Anthony  Jul 22, 2018 ]
Trevor from tech support suggested it as a perfect fit for the amplifiers I was already going to purchase. Glad he mentioned this because I was prepared to use the existing wiring I have run in my truck now, only to have found out during install they were not proper fit for the new equipment. [ BRADEN  Jul 21, 2018 ]
Value [ David  Jul 14, 2018 ]
It's what I needed and O2 free cables [ E  Jul 09, 2018 ]
Needed for instal [ Michael  Jul 02, 2018 ]
Because Nemo says so. [ Aaron  Jun 27, 2018 ]
Needed to power two Amps without running two power cables/grounds. [ H  Jun 03, 2018 ]
Seemed like a good choice to wire my amps. [ Michael  May 28, 2018 ]
two amps simple great deal [ ALAN  Apr 18, 2018 ]
It's the wiring kit that goes to my 5-chanel amp I have purchased. [ Geoff  Mar 04, 2018 ]
Ofc, decent price. [ Scott  Feb 28, 2018 ]
Adviser recommendation [ Barry  Feb 20, 2018 ]
Suggested by Crutchfield. [ Floyd Wm  Jan 05, 2018 ]
To run two amps [ Richard  Oct 21, 2017 ]
Quality products and at a great price....and I like the traditional Red/Black +/- keeps it simple..... [ DAMON  Sep 17, 2017 ]
Installing 2 amps and this has everything that I need [ ERIC  Sep 14, 2017 ]
Price. [ Pete  Sep 01, 2017 ]
needed for application [ andrew  Aug 28, 2017 ]
Great deal going on this wiring kit w/purchase of amp plus, I may change the system in the near future and add another amp. Getting a good deal on it made the purchase a no-brainer. [ A  Jul 04, 2017 ]
everything i need to install my amps [ Chase  Jun 23, 2017 ]
I chose the CKD4 kit to connect two amps to my system. I had all of the other patch cords already... And the 25% off was a plus! [ Gregory  Mar 24, 2017 ]
Has everything I need. [ Nolan  Feb 27, 2017 ]
good price, excellent information for comparing products and good advice from the service advisor [ SWATI  Feb 18, 2017 ]
All the high quality parts needed in one "discounted" package to connect my Pioneer with my amplifier. [ Anthony J.  Feb 01, 2017 ]
Based on compatibility with AMP and info Andy sent me. [ Terrence  Jan 22, 2017 ]
Decided on 4AWG even though Crutchfield recommended 8AWG because I wanted to future proof the wiring in the vehicle. If i ever go bigger on the amp/sub, I don't have to rewire the car. I went with Crutchfield's brand as my 1st time trying them out. You can always return the product while in the package if its not what you paid for. I said "why not?" [ Vincent  Dec 04, 2016 ]
So I could install another amp in the near future! [ Shane  Nov 21, 2016 ]
friend [ DAVID  Oct 22, 2016 ]
Great alternative to more expensive "name-brand" amp install kits. Great quality at a good price! [ M  Sep 30, 2016 ]
it was recommended [ Jesse  Aug 28, 2016 ]

3 questions already asked

Will this supply enough power to a 500w RMS mono and a 4x100w RMS full range? the fuse ratings are 60 and 50 amp, 110 combined amperage rating max.
[ Stuart  Sep 08, 2018 ]
2 answers
Yes it would
[ Juan  Sep 14, 2018 ]
II babe a 500 watt rms amp plus a 60 watt X 4 rms amp running smoothly wwitho ut aany battery drain or flicker.
[ Stephen  Sep 13, 2018 ]
In an article about choosing the wiring on here it says to double the amp's watts because of the efficiency loss. Does the maximum watts on this product already assume this? so if I had a 400 watt amp and 250 watt amp would this kit work? if i have to double that it would be over the 1100 watt figure.
[ Brad  May 27, 2018 ]
2 answers
Yes that will work make sure you ground your amps first and in the same spot . That's called common ground
[ JOYCE A  Jun 05, 2018 ]
TThis kit works. I have a 4-channel amp (800watt) and a mono amp (500watt). This is the kit you need for the power you choose.
[ Stephen  Jun 05, 2018 ]
I'm new to these kind of things with subs and stuff but does this connect the radio to the amp then to the subs or do I have to get a separate wiring harnes to connect the amp to the radio?
[ Nathan  Mar 18, 2017 ]
9 answers
No. The wiring comes with this system.This is all you need.
[ VERONICA R  Mar 21, 2017 ]
If one amp, your all good. Multiple amps need extra rca jacks to plug into the amplifiers. I installed 2 amps, one mono amp, one 4-channel amp. I had to buy 2 more rca jacks. This gives me more control to remain the music. Although, you can run the single rca then use line splitters to connect multiple amps, that leaves the amps as the only control over the sound.
[ Stephen  Mar 20, 2017 ]
This wiring kit is awesome but it only brings power from your battery to your amps. You run the heavy gauge wire from the battery to a splitter and you can power 2 amps. Then the 2nd splitter is used to ground both amps. You will most likely need separate RCA cables (or wires if you are feeding from the radio speaker outputs) to connect from the head unit to the anps.
[ Mark  Mar 20, 2017 ]
This kit is for connecting two separate amps to the car's battery and ground. The kit also has a wire that connects to the radio that signals the amp to turn on when the radio is on. You will need additional RCA cables to connect the audio signal from the radio to the amps.
[ Doug  Mar 19, 2017 ]
This kit has a ~16gauge blue wire that is connected to most after market head units (radio) as the "remote wire". This would tell the amp the radio has been turned on, and the amp would use thst signal tp turn itself on. This lit is used to provide adequate power to the amp, which needs a good ground source (black wire) connect to a screw so that contact can be made with bare metal. The red wire in this kit is connected to the + battery terminal with the provided fuse ~12in from the battery, the other end goes to the + terminal on the amp. The actual sound signal connection between the amp and the head unit is done with speaker wire (high level) or RCA cables with on cable pair per speaker. Crutchfield has great tutorials and diagrams on their site with more details than I can provide here.
[ Marcos  Mar 19, 2017 ]
Hi - This kit is just for power. The red wire will connect to your car battery, run through the firewall, and back to your amp(s), which are usually mounted in the trunk. The black wire is for ground. You will ground your amp(s) to your car chassis. You will need a separate wire harness for the back of your stereo along with RCA cables that will run from the back of your stereo to your amps. You will also need speaker wire to run from your amps to your speakers (usually 16-18 gauge). Hope this helps.
[ gabe  Mar 19, 2017 ]
I think this will answer your question. In short, it connects your battery to amplifier via fat power cord. There is also a thin wire that connects your radio to the on/off remote on your amp. It doesn't include the "rca" cables, which connect your radio to your amp.
[ Braden  Mar 19, 2017 ]
This kit powers two amps. You'll need to add a set of RCA interconnects, either 2 or 4 channel or both depending on your set up. Now your subs plug into your sub/mono amp which you'll need speaker wire for those....
[ DAMON  Mar 19, 2017 ]
This kit is just for powering an amp. Comes with power and ground wire and fuse blocks. You'll need rca cables to connect an aftermarket head unit unless you're using your stock head unit.
[ DWAYNE  Mar 19, 2017 ]

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