Scosche CFDK6 Wiring Interface

Allows you to connect a new car stereo and retain the factory amp in select 1995-up Ford, Lincoln, Mercury, Mazda, Nissan vehicles

Item #: 142C4FDK6

In Stock

39 Reviews

Your price: $39.99 Earn up to 40 Rewards points

Add to Cart

+ Add to wishlist + Email me alerts for this product

View all associated offers

Does it fit my car?

Select your car

Find what fits your car

The Scosche CFDK6 wiring interface allows you to integrate a high-powered aftermarket receiver into select 1995-up Ford, Lincoln, Mercury, Mazda and Nissan vehicles with premium factory systems. The package includes the OEA-4 adapter and a Ford-specific harness. The OEA-4 unit has output-level gain controls for each of its four channels which can be adjusted to properly match the new receiver to the factory amplifier.

Note: If you haven't already, please enter your vehicle information or call a Sales Advisor at 1-888-955-6000 to find out if this adapter is compatible with your vehicle.

  • 4 speaker-level inputs
  • output level adjustments for all four channels
  • works best with high-powered aftermarket receivers
  • dimensions: 3-15/16"W x 15/16"H x 2-1/16"D
  • 1-year warranty

Note: Most vehicles will require additional installation parts — please identify your vehicle if you haven’t done so. You can also call an Advisor for more information.

Scosche CFDK6 Wiring Interface Reviews

Average Customer Review:

39 reviews
Review this product
Great Gear Giveaway

Submit a review and then enter to win a $350 rewards card


Review this product:

Thanks for taking the time to share your experiences about this product. Please be sure to focus your comments on the product itself. Read our Review Guidelines for more information.

Your email won't be visible. Please use the email address that is associated with your order.
(e.g., JohnD) Your review will be signed using the display name and location
(e.g., Charlottesville, VA)

Click on a star to rate the overall product on a scale of 1-5
1500 characters left
  Attach a YouTube Review
Crutchfield Video Review Guidelines
  • Only submit videos that you made or are authorized to use.
  • Do not submit videos that contain music, video or visuals that are copyrighted and belong to someone else.
  • Please see our Review Guidelines for more information.
500 characters left
500 characters left

Good product

Written By ks, North Carolina on Tuesday, November 17, 2015

Crutchfield Customer Review (What's this?)

Good product and works well.

Pros: Perfect fit in right placement

Wire Harness worked 1st time after help

Written By Dennis in Oregon, Oregon on Friday, November 06, 2015

Crutchfield Customer Review (What's this?)

I had to obtain phone instruction for constructing the wire harness that joined the adapter harness to the new radio. I had expected a wiring harness instruction sheet that defined point to point connections for my installation (1998 F150 using the stock amplifier)

Pros: Worked 1st time it was plugged in

Cons: Wiring took longer than expected

Scosche CFDK6 Wiring Interface

Written By louis l, Ohio on Sunday, November 01, 2015

Crutchfield Customer Review (What's this?)

Easy to Use and adjust then gain but a little more difficult to stuff back in behind the radio in my expy

Scosche CFDK6 Wiring Interface

Written By StephenS, Arizona on Sunday, October 25, 2015

Crutchfield Customer Review (What's this?)

Works great!! Easy to install

Works great

Written By Jim, Oregon on Sunday, August 23, 2015

Crutchfield Customer Review (What's this?)

Worked perfect to install a Pioneer 8100 NEX in my 1998 expedition with a Mach audio system.

Pros: Allowed me to retain factory amps and sub.

Cons: None

wiring adapter for 98 expedition

Written By mmoore, florida on Tuesday, July 21, 2015

Crutchfield Customer Review (What's this?)

made the installation very easy. the kit even came with the connectors for the adapter to radio interface. made the system installation go easy

Pros: perfect fit and complete diagram

Cons: none

If you need this, you need it

Written By Paul D, Maryland on Friday, May 15, 2015

Crutchfield Customer Review (What's this?)

Not much to say about this. If you need it, you need it. You need it if, like me, you have a "premium" stereo in a 1995 Explorer, with a powered amplifier. As expected, you use this harness to control the power amp, and it provides line levels for each speaker so that you can properly set the gain for each channel separately. It works and was not difficult to install. Double Check Your Setup. I ordered the wrong harness at first because I didn't read closely enough. I thought I had a plain ol' radio when, in fact, my "auto-set" button meant that I had a powered amp and needed this.

Pros: Easy installation. As promised, allows you to retain your powered amplifier, which is nice if you're like me and just updating an old car with modern stereo features, and don't plan on replacing the whole system.

Cons: No cons with the product. The One downside is that once this is installed in a car like mine, it sits behind the installed radio (of course) and is not easy to access if you ever need to tune your line levels. Make sure you like the sound before you pop the radio in, because it's not as easy to remove the aftermarket radio as the factory one (if your setup is like mine).

Not needed

Written By Ken C K, Fort Myers, Fl on Wednesday, January 28, 2015

Crutchfield Customer Review (What's this?)

I connected the system with the interface engaged and without. There was no noticeable difference in audio clarity or production. The receiver I purchased, provided more volume and individual speaker control.

Pros: Easy to adjust

Cons: Added to the physical space needed. Additional wiring protocol needed, beyond the wiring schematic provided

Scosche CFDK6 Wiring Interface

Written By rb4877, Arizona on Sunday, December 28, 2014

Crutchfield Customer Review (What's this?)

I like it

Scosche CFDK6 Wiring Interface

Written By jeep guy, quincy il. on Saturday, October 11, 2014

Crutchfield Customer Review (What's this?)

so easy to install , literally only took minutes

Did not need

Written By Jeff K, Illinois on Friday, August 15, 2014

Crutchfield Customer Review (What's this?)

Crutchfield recommended this for my 2000 Ford Explorer but I could not figure out what in the world to do with it. After calling customer support they told me that I didn't need the part and they sent me the correct part free of charge.

Product review

Written By David Sr, Albany NY on Wednesday, July 16, 2014

Crutchfield Customer Review (What's this?)

Very easy to install, tech support was great.

Pros: Tech support was great, talked me through the whole installation

Cons: More wires than required, no clear directions on what to do with the extra wire

Scosche CFDK6

Written By Stuart, Va. on Sunday, June 15, 2014

Just updated to a new JVC from an old Kenwood, this new unit and adaptor replaces a 10 yr. old setup in my Explorer.

Pros: My new adaptor replaces one that function great for 10 yrs. Very easy install and come with great instructions.

Cons: Had the top of one of the adjustment screws break. Called support, had a new unit the next day , great service.

Scosche CFDK6 Wiring Interface

Written By Arvin, Phoenix, AZ on Saturday, May 24, 2014

Crutchfield Customer Review (What's this?)

Easy to install. I chose to drive around a bit to adjust levels before buttoning up the stereo in the dash. I suggest this to all so you don't have to take everything back out to make adjustments.

Pros: Works great

Cons: takes up a little of the in dash space behind the radio.

Scosche CFDK6 Wiring Interface

Written By Greg, Apex, N.C. on Friday, April 25, 2014

Crutchfield Customer Review (What's this?)

Worked well, easy install

Scosche CFDK6

Written By Miguel Mtz, Amarillo on Monday, March 24, 2014

Crutchfield Customer Review (What's this?)

I actually recieved the wrong set up. I would have really liked to see how this item would have helped.

Pros: looked cool and probably would have helped installing the stereo.

Cons: wrong item and didnt get a chance to try it out.

Scosche CFDK6 Wiring Interface

Written By Nolhatr, Palm, Fl on Thursday, February 20, 2014

Crutchfield Customer Review (What's this?)

Works fantastic!!

Pros: Was uncertain about 1 particular wire connection, 1 phone call to Crutchfield and all was well.

Scosche CFDK6

Written By CharlesJ, Monroe, GA on Tuesday, January 14, 2014

Crutchfield Customer Review (What's this?)

Absolutely fantastic, parts and support - no problem installing the stereo (Kenwood) in a 1995 Mazda B2300 - Crutchfield is the greatest!!!

Pros: Everything worked first time!!! Support is GREAT!!!

Cons: none

Scosche CFDK6 Factory Integration Adapter

Written By RogerH, Murrieta, CA on Sunday, January 12, 2014

Crutchfield Customer Review (What's this?)

Used this piece along with these next two items for an awesome new stereo in my 1997 Ford Ranger XLT. Pioneer FH-X700BT and Metra 95-5817 In-Dash Receiver Kit

Pros: Buy these three items for a fantastic radio

Cons: Don't have any complaints on the product

scosche adapter

Written By timk, Murfreesboro,TN on Tuesday, December 24, 2013

Crutchfield Customer Review (What's this?)

works well but for my ranger I had to cut off the green adapter and connect a different end my ranger had a different factory plug

Pros: works well

Cons: needs a few different variety adapter ends in the pack


Written By Ryan, Chesapeake, VA on Wednesday, December 11, 2013

Crutchfield Customer Review (What's this?)

Works great, exactly what I needed.

Pros: Works perfectly

Cons: None


Written By kupaa, Honolulu Hawaii on Wednesday, August 14, 2013

Crutchfield Customer Review (What's this?)


Pros: Works good!!!!!

Cons: ?

Connection Kit

Written By Art, Houston, TX on Tuesday, July 23, 2013

Crutchfield Customer Review (What's this?)

This connection kit worked great, made the install easy and simple.

Pros: Excellent product

Easy, Easy, Easy!

Written By Juan, Bronx, NY on Saturday, June 08, 2013

Crutchfield Customer Review (What's this?)

Easiest install i ever made, period! Definitely made my factory speakers sound louder, and clearer (this may be due to the new head unit as well). Just be careful NOT to over power your speakers with this small amplifier. DO NOT BE FOOLED BY ITS SIZE! Follow the instructions and you'll be fine.

Pros: Ease of use. Plain and simple install. Detailed instructions.

Cons: None.

Wiring adapter

Written By Steve N., Sparks, NV on Friday, May 03, 2013

Crutchfield Customer Review (What's this?)

Only needed one of the included adapters! I didn't need the RF Gain interface (due to space limitations in the dash). Ended up purchasing the needed adapter @ a different retailer. See review for the F150 dash kit. Big truck, no room in the dash for the headunit, wiring, amp interface adapter. Frustrating install, on my part!

Pros: NONE!

Cons: Amp interface not needed, just the amp wiring plug!

Factory system integration adapter

Written By Linda, MT on Thursday, January 17, 2013

Crutchfield Customer Review (What's this?)

It was confusing as to how to use this. Finally figured out I didn't have a factory installed amplifier so I only needed the one adapter. Seemed like a waste of money to send the whole package.

Nice unit

Written By Terry, Asheville, NC on Sunday, September 09, 2012

Crutchfield Customer Review (What's this?)

Relatively easy to install. Had to make one phone call since there were lots more wires coming from the car than there were wires on this unit. Turns out that most of the extra wires are not needed and the installation was much simpler than I was making it out to be.

Pros: Good sound

Cons: There was an awful lot of wires and this box to stuff into a very cramped space behind the radio.


Written By Dean, Santa Fe, NM on Tuesday, August 28, 2012

Crutchfield Customer Review (What's this?)

Used this for my 1998 Explorer 4 door with basic sound system AM/FM/single CD player. Worked perfectly! Just follow the intructions. I used solder and heatshrink for lasting connections. I did use a test light to make sure I had the right wires from the vehicle (switched power, constant power, dimmer, etc.) connected to the proper leads on the adapter. I did have a problem: see below. It was not a problem with this connector, but rather a problem the connector that was recommended by Crutchfield.

Pros: Perfect fit and easy to follow instructions...along with the intructions from the JVC KWR800BT head unit.

Cons: According to which sound system was in my vehicle I should have used a different connector. This connector is for a Mach system, but my unit was box stock basic, but still had a rear amp (but no sub). So if you have the vehicle I described above, this is the connector you need...not the one it calls for according to Crutchfield. When I called Crutchfield with the issue they were very gracious and sent me the correct adapter...a good deal in my book.

Factory System Integration Adapter

Written By BigJon, Alabama on Monday, January 30, 2012

Crutchfield Customer Review (What's this?)

This product will not work in a 2001 Ford explorer - at all - not even close. I called Crutchfield and they shipped me the right part immediately over the New Year Holiday and I was rocking in 3 days. Great service!!!

Pros: Won't work on 2001 Ford Explorer

Check Vehicle Before Buying

Written By Jeremy, Davison, MI on Monday, February 07, 2011

Crutchfield Customer Review (What's this?)

To be fair, I guess my rating is more about Crutchfield's website functionality and
advisors than this product. I wasn't sure I would need this, but according to Crutchfield's
fitment guide and the phone advisor my 98 Mountaineer would need this because I had
the Single CD/Cassette radio with RDS button. When it arrived the connectors with it did
not fit so I called Crutchfield to find out I didn't need it and instead needed the "base"
radio connector because apparently this does not have a factory amp even though the
fitment guide and previous sales advisor said so. The tech support advisor first wanted
to charge me $7 to return this plus the charge for the other connector. He then realized
that Crutchfield sales advisor sold me the product and sent me the replacement at no
charge and refunded the purchase price of this amp adapter. Best thing to do is pull
your radio first, check out what type and color of connectors you have, then talk with an
advisor before ordering so you don't have to wait "mid-install" for the rest of the parts.

Scosche CFDK6 Wiring Interface

Written By RandyF, Seattle on Saturday, January 29, 2011

Crutchfield Customer Review (What's this?)

Item works. Not sure why it was required. Instructions with it were very vague and
incomplete. Lots of un-used wires that were not explained in either the Crutchfield
instructons or the Scosche. The entire radio install took 2 hours of which 1.5 hours was
figuring the wiring out for this device.

Scosche CFDK6 Wiring Interface

Written By amanda, Grove Hill, AL on Sunday, December 26, 2010

Crutchfield Customer Review (What's this?)

Splices were not crimped; wiring instructions were not correct relating to the powering of the remote amplifier

Scosche CFDK6 Wiring Interface

Written By Tousar, Indiana on Wednesday, November 03, 2010

Crutchfield Customer Review (What's this?)

The pre-crimped wires were separated upon delivery. This is not needed in a 1999 Ford Explorer XLT w/o MACH system.

Scosche CFDK6 Wiring Interface

Written By Dan G, Falls City,Ne on Tuesday, October 19, 2010

Crutchfield Customer Review (What's this?)

simple to use and works flawlessly. Great product came wired for the perticular app.
thanks Keep up Great work

Very helpful product

Written By Jamey, Greensboro, NC on Thursday, July 08, 2010

Crutchfield Customer Review (What's this?)

This amplifier integration kit was a really big help when I installed an aftermarket radio in my 1997 Expedition, almost a necessity. Very simple to splice the wires together with the supplied instructions that identified all the wires and the connector adapters fight right in to the existing harnesses on the vehicle. I would definitely recommend getting this product if you have a factory amplifier in your vehicle's stereo system.

'98 Expedition Eddie Baur

Written By william, Columbus, OH on Thursday, March 19, 2009

Crutchfield Customer Review (What's this?)

I have the '98 Eddie Bauer edition of the Ford Expedition and this was just the part I needed. I received a similar kit when I bought my radio (from Crutchfield) but it was not the right one. It seems the Eddie Bauer edition is yet another radio option beyond stock and MACH.

98 lincoln navigator

Written By ironbalance, california on Tuesday, September 23, 2008

This unit works good. Dont forget to hook up the blue/white strip wire from
the grey plug to a positive signal if you have a factory amplifier, or you will
get no sound at all. This wire works as a factory amplifier turn on signal.
The black box is just to bulky and is a pain in the butt to fit into a small
dash pocket.

Scosche CFDK6 Wiring Interface

Written By Mike, Las Vegas, Nevada on Sunday, September 21, 2008

Crutchfield Customer Review (What's this?)

I soldered all my speaker connections because past experience over the years I found them to come loose through vibration. I used the connectors on the tuner connections plug. The directions would be more helpful if they explained or told the individual how to inspect and check the OEM system out prior to hook up. Such as having an AMP that was factory installed and where it may be located and that it has to be connected in order for the system to send sound to the speakers. You have all the wires you want in the adaptor but you need to know how to inspect your unit to see what is applicable. I used a repair manual to find what all the Expedition has and how to find it. Other wise the adaptor is a great help compared to installs we did with 8 track players back in the 60's and 70's. We had to install rear seat or door speakers, amplifiers and all those wonderful things that are now installed at the factory or sold as a kit. Crutchfield was a tremendous help in making sure I received the correct mounting hardware and kits and answered questions for me in a very timely manner once I decided I had to ask because I could not figure it out including a Sunday Morning. Thanks everyone, I appreciate the promptness in answering my questions I had.

Problems installing with MACH factory sound system

Written By stever761, Spicewood, TX on Friday, May 09, 2008

Crutchfield Customer Review (What's this?)

I purchased the Dual XHD-6425 head unit and purchased this to connect it to the factory amps & speakers in my 1997 Ford Expedition Eddie Bauer. Install was quick and easy with the instructions from Crutcfield (about 30 min), but when I tested it my factory main amp and rear subwoofer amp didn't appear to be working. I turned the Gain up all the way on the Scosche adapter and though I could hear the speakers, they weren't getting the same amplification the got from the factory radio. The subwoofer, just replaced with a MTX Thunder4500, didn't work at all (it worked fine with the factory head unit). Called Crutchfield and they worked with me for 30-40 minutes and suggested cutting the gain out of the loop. When wired directly from the headunit speaker out leads to the Scosche adapter without the Gain module it appears to work. I don't know if the Gain module was bad or if its just a poor design.

Hands-on research

What's in the box?

Download owner's manual

  • OEA-4 OEM Amp interface (with 8-wire input with bare wires/8-wire output with green rectangular connector)
  • Vehicle power wiring adapter (gray rectangular connector w/ 6 wires)
  • Flat-blade screwdriver (attached to interface module)
  • 13 Crimp caps
  • Instruction sheet

Product Research


Compatibility: The OEA-4 (model C4FDK6B) is a non-electronic interface that allows an aftermarket high-power stereo to integrate into select 1995 and up Ford, Lincoln, Mercury, Mazda and Nissan vehicles with premium factory systems. Please check the Crutchfield Vehicle Selector for compatibility for your vehicle.

Adjustment Gain Controls: Four rotary gain controls (front left, front right, rear left, rear right) are located recessed inside the adapter chassis. There is a small flat-blade screwdriver attached to the adapter's case, and its use is recommended. The controls are very fragile and sensitive, and a slight adjustment will change volume dramatically.

Harnesses: The adapter's input wires are approximately 5-1/2" long with bare ends. These splice to the new receiver's speaker output wires. The adapter's output wires are approximately 11" long and terminate into a green rectangular Molex plug. There is an additional gray rectangular Molex plug with 6" wires with bare ends (These 6 wires splice to the new receiver's power/ground wires). The two Molex plug ends are molded to match with factory wiring harnesses. Crimp caps are provided for wire splices.

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 verify what’s in the box, 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.

Searches related to the Scosche CFDK6 Wiring Interface Allows you to connect a new car stereo and retain the factory amp in select 1995-up Ford, Lincoln, Mercury, Mazda, Nissan vehicles