Scosche CNN03 Wiring Interface

Allows you to connect a new car stereo and retain the factory amp in select 1994-up Nissan and Infiniti vehicles

Item #: 142C4NN03

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106 Reviews

Installation gear for most cars

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The Scosche CNN03 wiring interface allows you to integrate a high-powered aftermarket receiver into select 1994-up Nissan and Infiniti vehicles with premium factory systems. The package includes the OEA-4 adapter and a Nissan-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 CNN03 Wiring Interface Reviews

Average Customer Review:

106 reviews
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Very nice product

Written By Mike, Hiram, Ga on Sunday, July 19, 2015

Crutchfield Customer Review (What's this?)

Easy to install, just make sure you hook the amp power wire to red wire since some stereo systems don't have amp power wire. Other than that, it was very easy to do.

Pros: Nice product

Cons: Instructions need more info

easy to install

Written By IvanLN, Florida on Wednesday, June 10, 2015

Crutchfield Customer Review (What's this?)

The installation was fairly easy but it did require a call to tech support due to confusing instructions. After the call, everything worked.

Pros: Fairly easy to install

Cons: Requires crimping or soldering of connections. No OEM connector included.


Written By R.vaughan, Springerville, AZ on Sunday, June 07, 2015

Crutchfield Customer Review (What's this?)

Simple to install, great directions

Pros: Works as it should, whew!

Cons: No cons for me

blue wire madness

Written By JimmyMacIAM, Georgia on Saturday, May 23, 2015

Crutchfield Customer Review (What's this?)

As you can find in other reviews - it is really inexcusable that the instructions do not indicate that you need to pair the 2 blues and two blacks. Essentially there are two black wires and 2 blues loose on the harness - you need to twist these with the blue and black (respectively) on your radio / head unit. If you don't, you wont have sound. Wasted a bunch of time and had to cut and retwist wires to fix.

Pros: better than not having a harness

Cons: instructions were crapola.

Scosche CNN03 Wiring Interface

Written By VP, Florida on Wednesday, April 22, 2015

Crutchfield Customer Review (What's this?)

worked perfectly


Written By Wik, Dunmore, PA on Sunday, April 05, 2015

Crutchfield Customer Review (What's this?)

Easy hook up.

Perfect fit / no hassles

Written By Lil Red Maxima, Oklahoma on Monday, March 02, 2015

Crutchfield Customer Review (What's this?)

No pops. No clicks. No hassles. Works just exactly like it's supposed to.

Pros: easy hookup, nice color coordination. Plugged right into the stock harness. No hassles, didn't even need to adjust the outputs.

Cons: I hate having a 'dongle' on my fresh new head unit, but that's through no fault of anyone but the Bose guys that put the stock system design together. So not a con really.. just a small complaint at Nissan / Bose for making a non standard system.

Worked great for me.

Written By Hawkeye, Nashville on Sunday, February 22, 2015

Crutchfield Customer Review (What's this?)

The other reviews had me worried but this worked great in our 2002 qx4.

Pros: Worked fine. Bypassed the amp.

Cons: None

Scosche CNN03 Wiring Interface

Written By BIGRUGGED, Columbus ga on Sunday, February 08, 2015

Crutchfield Customer Review (What's this?)

Product was received quickly, hookup was easy and it worked exactly like they said it would.. thank you very much!!

Pros: Fast delivery easy hookup

Cons: No cons at all

Works great!

Written By Will, Bay Area, CA on Thursday, February 05, 2015

Crutchfield Customer Review (What's this?)

I installed this in a 2001 Infiniti QX4 (Nissan Pathfinder LE) with a JVC KD-AR959BS head unit. I originally used a Metra 70-7551 harness since that uses the preamp outs and is less wiring, but that harness causes pops when changing inputs. This harness works perfectly out of the box, I didn't even have to adjust the dials as they were already set properly.

Pros: Great sound quality, individual speaker adjustments, no popping sound!

Cons: Fairly bulky, requires more wiring than alternate harnesses (but better results)

Great timesaver

Written By BrianP, Illinois on Tuesday, January 27, 2015

Crutchfield Customer Review (What's this?)

Great time saver and worked just as described. You can spend an hour wiring your own harness, or 10 minutes using this unit.

Pros: Easy of use; quick install

very good

Written By Anonymous, Minneapolis, MN on Wednesday, December 24, 2014

Crutchfield Customer Review (What's this?)

Easy to install, a better design would just be dials rather than screw holes, hard to see levels.

directions needed

Written By Queensphil, Queens NY on Saturday, October 18, 2014

Crutchfield Customer Review (What's this?)

Purchase this unit as a recommendation from Crutchfield. This was a gift for my wife that should have taken 10min to install. No where in the directions it stated to connect the blue and white wire from my new pioneer unit to the blue on this unit. I spent the whole day checking fuses,wires, and speakers. This should have been 20min job for my wife but no. I had to read old reviews to figure this out. I'm not only posting this here on my favorite place to purchase great car audio website. The manufacturer are real you know what. I only use Crutchfield due to fast delivery and nice customer service. My wife is happy with her new Bluetooth in her 02 altima.

2001 Nissan Pathfinder w/Bose system

Written By Jose, Phoenix AZ on Monday, October 06, 2014

Crutchfield Customer Review (What's this?)

Product was easy to install. Read other reviews about the blue wire and blue wire with white strip hook up to achieve sound, worked perfect.


Written By Bryant W, Pickens, SC on Tuesday, September 16, 2014

Crutchfield Customer Review (What's this?)

The wire harness and dash install kit were flawless! My aftermarket CD player is better than the factory, especially with gain control for each channel. Thanks Crutchfield!!

Pros: 1. Everything fit perfectly. 2. Works great.

Cons: 1. I broke one of the gain controls while I was adjusting it.

Great Product

Written By Travis P., St. George, Utah on Tuesday, September 09, 2014

Crutchfield Customer Review (What's this?)

Used this product to integrate my new deck with existing factory Bose stock amplifier and speaker system in my Nissan Altima. Allowed me to adjust levels to perfection!


Written By whodat, Clayton, NC on Friday, September 05, 2014

Crutchfield Customer Review (What's this?)

Unit works as promised, but is very fragile. Extreme care must be taken when adjusting the dials.

Cons: Adjustment dials are very delicate. Two broke during first adjustment, resulting in lower output to two of four speakers.

Faulty Connections

Written By Drewbacca, Pittsburgh, PA on Thursday, August 28, 2014

During installation, I found that one of the speakers didn't work. Cut the wire, put a new wire crimp on it (replacing what was factory installed), and no further problems for a year. To my regret, I should have remade all of the connections at the time of installation as several others eventually failed and I had to take the stereo back out and rework the wiring. When the other connections started to fail, the front speakers would fade in an out (although turning up the volume would temporarily restore the inactive speakers).

I find it unacceptable that a product at this price would have what appears to be a common and simple assembly problem. If I had to guess as to what the underlying cause is, they didn't cut the wire shielding back far enough to make a good connection. It's not worth the discount price that Crutchfield gives customers when buying a stereo, it should be free if the manufacturer can't take the time to assemble it correctly.

Pros: Allows aftermarket head-unit to connect to factory Bose speakers. Easy to adjust gain and no worries of accidentally knocking the audio adjustment out during installation.

Cons: Poor QA, Poorly assembled. Requires out-of-pocket replacement of wire-crimps (or solder, if you go that route).

Scosche CNN03 Wiring Interface

Written By Anonymous, Durham, NC on Tuesday, August 12, 2014

Crutchfield Customer Review (What's this?)

It worked with our 2002 Nissan Pathfinder LE. Made the installation (myself) much easier, of course with the help of Crutchfield support which was fantastic. Connected with Sony MEX N5000BT. The Bose speakers sounded great.

Pros: It's half-price when you buy the stereo HU from Crutchfield.

Cons: None

Great Product

Written By jhimsey, Lorton, VA on Sunday, August 03, 2014

Crutchfield Customer Review (What's this?)

This product worked well with my Infiniti application. The sound from my speakers is incredible.

Pros: The unit came with great instructions.

Cons: I had to purchase two. The adjusting knobs inside the unit are very sensitive and prone to breaking. Even when I was gentle, I broke it.


Written By swandtj, Gallatin, TN on Thursday, June 26, 2014

Crutchfield Customer Review (What's this?)

This is a great adapter, it made hooking up my aftermarket radio a breeze.

Pros: Quality item, Good color coded wires.

Cons: None

works great

Written By robert l, allenhurst ga on Thursday, June 05, 2014

Crutchfield Customer Review (What's this?)

once found it made after market for my 95 maxama a push pull installation this product should used alone it takes place of the merta products

Pros: made installalation simple

Cons: nodawbacks

Makes Installation Super Simple

Written By Russter, Catasauqua, PA on Saturday, May 10, 2014

Crutchfield Customer Review (What's this?)


Pros: This little bad boy made installing my new JVC Arsenal into my Nissan Maxima a breeze.

Cons: None

Love it

Written By Rhonda Wagoner, Richmond, KY on Wednesday, March 19, 2014

Crutchfield Customer Review (What's this?)

Worked great!

Excellent Adapter

Written By JSmooth, Albany, NY on Thursday, January 23, 2014

Crutchfield Customer Review (What's this?)

This is an excellent product! I used this with my Sony XAV-64BT unit. It has greatly enhanced my sound quality for my BOSE system in my G35 sedan. Wire coding (instructs) were a little confusing; had to call support b/c I had no audio. It appears one wire needed to be included even though instructs say it shouldn't have been. Support was very helpful and I'm very satisfied with the result.

Pros: Excellent quality to my unit.

Cons: instructs were not clear; had to contact support for clarification.

Worked well for me, but do your research on the extra wires.

Written By PKR, Chicago, IL on Monday, January 13, 2014

Crutchfield Customer Review (What's this?)

This is needed to balance the signal for factory amps. Its just a Scosche reducer with a Nissan harness attached. Scosche makes another variant that's a little better put together, but Crutchfield doesn't carry it and its more expensive. Crutchfield really needs to add some wiring harness notes to the master install sheets on this one. Luckily I got enough info from these reviews and the G35 forums to figure it out.:

Extra black with stripe: Amp Ground (Must be grounded) Blue white stripe: Remote Amp on (Connects to Blue white stripe) Note for G35 Coupe's: Blue Wire: Power Antenna Amp (Typically attaches to Blue White stripe also, but the G35 requires higher amperage for proper radio reception, so its recommended that it should be attached to the red power switched wire. )

Pros: Colors are standard, made connecting things so much easier. Does exactly what you need it to do. Cheap.

Cons: Pots are super sensitive and can be tricky to tune all the same. The non speaker wires are short, but luckily the factory harness was long enough so it didn't matter.

Scosche CNN03 Wiring Interface

Written By Caterinaa23, Tampa, Florida on Monday, December 16, 2013

Crutchfield Customer Review (What's this?)

Dope product : my car sounds good now !! :D

Pros: Easy install

Cons: Install guide don't have alot of info

Works well.

Written By Anonymous, Seattle, WA on Wednesday, December 11, 2013

Crutchfield Customer Review (What's this?)

The adapter works as described. Install instruction are a bit lack luster but was easy to install.

Good product, needs more instruction

Written By TD, Greensboro NC on Sunday, December 08, 2013

Crutchfield Customer Review (What's this?)

Works as billed, only shortcoming is an omission from the installation notes that an extra wire connection is needed that is not noted. Solved the issue by trial and error from a hint from another reviewer, ( Thanks Lifesaver ).

Pros: All hookups are clear with one exception.

life saver

Written By Lorie Turner, Baldwin, NY on Friday, December 06, 2013

Crutchfield Customer Review (What's this?)

This little thing was my life saver. Reached the point of the radio install to hook up the wires and was lost. Called Crutchfield and they informed me I needed this harness, they shipped it at no charge!! Got it in two days and it was easy, until I got no sound. Called Crutchfield again and they talked me thru and fixed my problem, simple switch of the wires. If by chance you run into the same problem, hook the two blue and blue and black wire together. With all three together, sound!!!

Pros: Made the wiring SO much easier

Scosch adapter

Written By Colt, 45503 on Tuesday, December 03, 2013

Crutchfield Customer Review (What's this?)

Works great

Pros: Works

Cons: None

Scosche CNN03 Wiring Interface

Written By Charlie, Merritt Island Fl. on Sunday, November 10, 2013

Crutchfield Customer Review (What's this?)

Works perfect after a little confusion with the wiring. Tech support was excellent and eliminated the confusion in short order.

Pros: Works well

Cons: The plastic screwdriver is awkward to use

Works as described

Written By Miles, Colorado on Saturday, September 28, 2013

Crutchfield Customer Review (What's this?)

Works well

Pros: works

Cons: none

Product not well planned

Written By BradR, CA on Wednesday, September 18, 2013

Crutchfield Customer Review (What's this?)

As others have mentioned, the gain adjustment is cheaply designed with internal slotted pots instead of surface mounts. It is very difficult to view the internal settings to ensure they are uniform for all speakers. Your have to guesstimate by ear. Plus, the wires are too short to allow for placement of the device for easy access if the adjustments have to me fine tuned. I had to pull the whole center console apart again just to fine tune the original guesstimate. Not a good design for tweaking.

Pros: It gets the job done by trial and error

Cons: Engineering shortcuts to save cost. The device has to be tucked inside the console where it is impossible to access for fine tuning. I have to believe that someone is making a better mousetrap.

Scosche CNN03

Written By R.H., Huntsville, AL on Tuesday, September 17, 2013

Crutchfield Customer Review (What's this?)

This adapter works fine but the wiring is not straightforward if you don't have previous install experience. Also, the adjustable settings are a bit delicate - you'll want to be careful in turning them or else they'll break. Overall, I recommend this product (I haven't had any issues out of it)

Pros: Works well

Cons: Adjustable knobs are a bit delicate (be careful in making adjustments to them)

Heed the warnings about fragile ajustment knobs

Written By NelsonDenver, Denver, CO on Sunday, August 25, 2013

Crutchfield Customer Review (What's this?)

Overall good product, Pretty much a necessity to integrate a powered amp with factory-installed powered speakers.

Pros: Makes installation of the radio a snap, just follow the wiring directions, and plug the harness into the factory sockets.

Cons: As it warns in the directions, the adjustment knobs are fragile. I had one of these units fail due to broken controls.

CNN03 wiring harness adapter

Written By Mark H, Dryden, WA on Tuesday, August 13, 2013

Crutchfield Customer Review (What's this?)

Well constructed, good fitting, appropriately designed for length. A good fit with the stereo it went on. I solder and heat shrink tube every connection, and would recommend this installation method above any other. I also bind and bundle every run of wires from end to end to facilitate easy placement in the dash void area. Color coded to an exact match for car and new stereo, it was easy to install! Thank you, Crutchfield!

Pros: Good match for car and new stereo, well constructed, simple wire-to-wire color coding, and all peripheral wiring options there in the harness as well. (Power antenna, SW Controls, etc.)

Cons: The install guide seems a bit generic. Could use a more specific-to-vehicle install guide. Intuition and experience filled the info. gap for me, but might not for someone else. Easy enough to overcome with Crutchfield's tech. guidance over the phone available too.

Works as Advertised

Written By Steve, San Diego, CA on Sunday, July 21, 2013

Crutchfield Customer Review (What's this?)

Almost plug & play. Instructions weren't clear about connecting the amp turn-on wire, so initially nothing worked (G35 with Bose system). All good once I made that connection.

Pros: Works. Included with stereo purchase.

Cons: Instructions not entirely clear.

Works fine... but here's a wiring tip

Written By Henry95, Tampa, FL on Tuesday, July 09, 2013

Crutchfield Customer Review (What's this?)

Used this to mate a new JVC head unit to the existing Bose system on a 2005 Infiniti G35. Worked perfectly.

Here's the shortfall in the documentation for the wiring that some others commented on. There's an extra blue/white and black/white that return from the smaller connector. Directions don't say what to do with them. The answer is to connect the blue/white to the "remote amp" and the black/white to ground... so those will be three-wire connections instead of two when you solder it together to the head unit harness. Crutchfield support quickly clarified that when I called; not sure why the directions from Scosche make you guess.

The gain control adjustment went fine, although it's hard to believe (let alone follow) the instructions to turn them up until your speakers start distorting. I stopped at "loud enough" and preferred not to risk my tweeters, thank you very much...

Pros: Works

Cons: Two wires not explained in documentation; procedure for setting gain could endanger speakers

Too easy

Written By JAO, Albuquerque, NM on Sunday, July 07, 2013

Crutchfield Customer Review (What's this?)

Plug and play...too easy!

Did the job

Written By John M, Long Island, NY on Tuesday, June 25, 2013

Crutchfield Customer Review (What's this?)

Did the trick, used a tuning tool to adjust the pots. I had these having worked on electronics before. I replaced all of the factory crimps with my own as I had bad connection issues. I used this in my 2001 Pathfinder. I found that I needed to bump the levels up for the rear speakers vs the front speakers. I believe this to be more of a factory equipment issue than an adapter issue.

Pros: Good instructions.

Cons: Bad factory crimps.

Worked Perfect

Written By AmitDenver, Littleton, CO on Sunday, June 02, 2013

Crutchfield Customer Review (What's this?)

Worked perfectly and now I have a after market stereo on my 2003 altima. The diagram that came with the product is quite generic and so I had to call tech support for help. Would recommend this to friends... btw tech support is simply awesome

Pros: Excellent sound quality and easier to install without any prior experience

Cons: The diagram is pretty generic


Written By marc, Atlanta, GA on Saturday, May 25, 2013

Crutchfield Customer Review (What's this?)

Works great but instructions on how to connect to powered amp were unclear

Pros: Works Good

Cons: Instructions unclear

Scosche CNN03 Wiring Interface

Written By DarlaC, Willis, TX on Tuesday, May 21, 2013

Crutchfield Customer Review (What's this?)

Works great. Was easy to install.


Written By MichaelI, St louis, MO on Tuesday, April 16, 2013

Crutchfield Customer Review (What's this?)

Works as it should. Needed a little help from tech support, which is awesome by the way, but this was my first install.

Pros: Price and works as it should.

Cons: Instructions could be better, but we have Crutchfield tech support.

Supplied connectors inadequate. Otherwise fine.

Written By Mike, Minneapolis, MN on Sunday, April 14, 2013

Crutchfield Customer Review (What's this?)

Product came with excellent documentation. Crimp connections made in the factory were all very poor, two had come disconnected during tranist? I planned to solder everything anyway, so this was not a problem. Hookup was simple, as was adjustment of the four tiny potentiometers. I ended up maxing them all out BTW with no ill effect on sound quality that I could observe. Much better solution for the Nissan Bose Premium Sound as opposed to the prior RCA out's approach of the more generic aftermarket adapter. No more soft buzz or whine in the background now that the amp is receiving its expected balanced inputs. Working great! Thanks.

Pros: Module works as advertized

Cons: Supplied crimp connectors and connections poor. Just solder it and you're done forever...

Exactly what the doctor ordered

Written By RichardC, West Milford, NJ on Monday, April 08, 2013

Crutchfield Customer Review (What's this?)

The device is what is needed to use the existing Bose amplifiers in the Pathfinder. The product is a little cheesy feeling, but worked perfectly. It was pre-wired for the pathfinder Bose system, but there were 2 wires that were unclear instructions for. However, a quick call to tech support, and as usual, problem solved. It worked great with the aftermarket radio and Bose amplifiers. I was able to get maximum volume and no distortion. Gotta love Crutchfield for getting all the parts you need right.

Pros: Adjusts output so amps are not over driven. Comes with screwdriver to adjust pots. Prewired for system. Does what it is supposed to do

Cons: Price, but good discount at least, pots a little difficult to adjust , but it is once and done.


Written By tttkay, San Diego,CA on Saturday, March 30, 2013

Crutchfield Customer Review (What's this?)

Before I put this, I had high pitch annoying sound which made me almost crazy. Then I found about this product from Crutchfield and my problem was solved right after I installed it. Do not use any other product when you do aftermarket audio!!

Perfect Adaptor

Written By cpavon, Brandon,FL on Monday, March 04, 2013

Crutchfield Customer Review (What's this?)

This Scosche adaptor easily helped me connect a new pioneer fx700bt to my 2006 Nissan Altima with bose system. All I had to do was connect the radio wires to the adaptor and then connect the adaptor to my cars wire harness. That's it job done! I love it!!

A must have for simple install

Written By BCraw, Knoxville, TN on Sunday, February 17, 2013

Crutchfield Customer Review (What's this?)

A must have for a simple Nissa/infiniti install, retaining the factory OEM speakers

Pros: Easy head unit wiring/installation to OEM wiring harness.

Cons: None

great product

Written By proboscis maximus, gates tn on Saturday, February 16, 2013

Crutchfield Customer Review (What's this?)

Great product! Easy to hook up! I was worried about not doing it right, but it was trouble free! Now my jvc unit rocks even harder through my bose amp!

Pros: Easy and works great

Cons: None

Nissan/Infiniti Factory Integration Adapter 2003 Infiniti G35 Sedan

Written By C L, Chapin, SC on Saturday, January 19, 2013

Crutchfield Customer Review (What's this?)

No issues installing. Sound as good as OEM.

Nice Factory Adapter

Written By Rogues, Doylestown, Oh on Tuesday, January 08, 2013

Crutchfield Customer Review (What's this?)

Crutchfield has always been good for custom cables for easier installation and this set is no exception. The only recommendation I have is to cut off their crimps and solder the wires. The crimps proved problematic in that there was minimal volume in the front right speaker. A criss-cross of left and right after cutting out the crimps showed nothing wrong. If you're taking the time to take your dash apart, take the time to solder and heat-shrink your connections! ...maybe Crutchfield will do that to these assemblies in the future, since they also recommend soldering! :)

Pros: THE most convenient way to mate up to OEM cable harnesses.

Cons: Crimps are not perfect. If those connections were soldered, I'd give this a 5-star rating

Instructions Lacking

Written By Illiniwek, Mahomet, IL on Thursday, November 22, 2012

Crutchfield Customer Review (What's this?)

Purchased while replacing head unit for a 96 Maxima (with factory Bose system). In the end it worked great, but the instructions leaved some to be desired. See Cons for list of wire color discrepancies.

In my setup I wired up the 8 wires for the channels, plus Red, Yellow, and Black as directed. The Blue (Power Antenna/Remote Amp Turn-On), labeled as Blue/Blue White in the wiring diagram, was not used since I am also replacing the power antenna. At this point I had power (lights) but no audio, and Orange, Black/White and Blue/White unused (along with straight Blue listed above).

The Blue/White wire had a flag hanging off it labeled system remote control, which I thought indicated it was an "antenna" receiver for remote controls that some head units have. This wire was the key - it needs to be stripped and connected the corresponding Blue/White wire from the head unit. After this I got sound.

My Maxima is also bizarre in that the unit will not power on (no lights or sound) unless the antenna is fully connected. I believe it grounds through the antenna (even if replacing the head unit and power antenna). I tried connecting the extra Black/White wire to the Black (Ground) pair, hoping this would bypass the need for the antenna to be connected before the unit would even power up, but this did not affect it. I left it connected anyway. In the end I had an unused Orange wire, blue wire (since I'm replacing the antenna), and should have had an extra Black/White.

Pros: Works as advertised, required for 96 Nissan Maxima Head Unit replacement.

Cons: The following are issues between the Wire Color Code Chart (WCCC), Wiring Diagram (WD) and reality LF +/-, RF +/-, LR +/-, RR +/- , Red, Yellow, Black all exist as listed in WCCC and WD correctly. Orange exists, listed in WCCC, not listed in WD Pink doesn't exist, is listed on WCCC, not in WD Black/White exists, not listed in WCCC, not in WD Blue* does exist, and is regular Blue. Listed in WCCC, labeled as "Blue/Blue White" in WD Blue/White exists, not shown in WCCC or WD, note is not reg

Cheaply built

Written By Artemio M, Amarillo, TX on Saturday, October 27, 2012

Crutchfield Customer Review (What's this?)

Used this to replace the crappy Bose HU in mh 2003 Infiniti G35. The pre-wirring done in this product sucks, they came apart right out of the bag. I soldered them and now i have piece of mind that i am getting full performance of this product. the wiring diagram that came with this is not 100% accurate. I called Crutchfield and they told me to connect both negative cables together along with the negative coming out of the new receiver, they DON'T KNOW what they're saying. After spending couple of hours troubleshooting, i found out that the negative in the Scosche adapter had the ground pin in the wrong place. overall, my new HU works and sounds awesome after the few modification done to the Scosche adapter.

Pros: O.o

Cons: -_- it can be made better

Nissan BOSE

Written By safetyt, Palm City, FL on Thursday, September 20, 2012

Crutchfield Customer Review (What's this?)

After you get past the wiring part, it works great with the 'crappy' BOSE system...the JVC stereo sounds awesome with Full Range...i drive 2hours one way...sounds like I'm listening to music at a studio.

Pros: Pulls out all of the midrange...sounds bettre than the OEM

Cons: Don't press down on the 'pots' should come turned down...light turning a little at a time...flimsy...oh and what's with the short wires...

Scosche CNN03 Wiring Interface

Written By RogerC, Lindale, TX on Thursday, September 20, 2012

Crutchfield Customer Review (What's this?)

This adapter simplified the receiver installation and sound balancing for my Nissan Maxima Bose system.

poor quality insurance

Written By headloss, Chicago on Saturday, September 15, 2012

Crutchfield Customer Review (What's this?)

My right rear speaker did not work after installation. The problem ended up being a bad connection/crimp between the box and the harness (which was precrimped). So, I cut the wire and made a new connection. No further problems after modifying poor workmanship on the part of the manufacturer. No issue with the unit itself.

Pros: Integrates with factory system. No notable distortion or whine.

Cons: Poor workmanship on wiring; poor quality assurance.

Scosche CNN03 Wiring Interface

Written By Anonymous, Somerset, MA on Sunday, September 02, 2012

Crutchfield Customer Review (What's this?)

Flawless! Glad I can gett all that I needed from one place

Works Well With Nissan OEM System

Written By FT, Connecticut on Thursday, August 23, 2012

Crutchfield Customer Review (What's this?)

Can make the difference between just OK and pretty good when connecting after market head unit to Nissan OEM amp and speakers. The install was pretty easy, and the performance was good. Unit was not over built, nor did it seem excessively fragile. I did not use the supplied tweak tool opting instead for a jewellers screwdriver.

Pros: Does what it is supposed to and sounds clean.

Cons: Came with plugs for direct integration with Nissan factory wiring harness which were attached with crimp connectors. Crimp connectors should never be used in any automotive application, I cut them out and made direct soldered connections insulated with shrink tube. I took one star away for this.

Does not work

Written By Anonymous, Pittsburgh, pa on Wednesday, August 01, 2012

Crutchfield Customer Review (What's this?)

I bought this for my 98 infinit i30 my Bose head unit kept ejecting tapes (I used a tape to play an iPod), even if there was nothing in it. I connected this to a Sony head unit there was power and appeared to be sound on the unit but it did not come through the speakers, bought a different adapter 15 dollars cheaper and it worked and sounded great. Worst money I've ever spent.

Scosche CNN03 Wiring Interface

Written By Anonymous, Navarre,FL on Thursday, July 26, 2012

Crutchfield Customer Review (What's this?)

takes out all the guess work, oh yes it also eliminates the frustration factor :)

Could be a lot better.

Written By jesi, falmouth, va on Sunday, July 15, 2012

Crutchfield Customer Review (What's this?)

I needed this so I could keep my Bose amp. and speakers. It works, so no big complaint. It is cheap. It works best with high output units so they say. Connecting it is no problem even though you end up with an mass of wires to shove into the dash. The bigest thing is that the volume has to be adjusted and the knobs are cheap. I turned the vol. all the way down turned the unit on and adjusted up to get the right leavel. With my unit the vol. needs to be all the way up. When I got it all the way up the vol. knobs broke off. Not a prob. I didn't need any more adjustment anyway.

Pros: It does the job and the sound is good.

Cons: Cheaply made.

Easy to install

Written By Steve, Jackson, MS on Thursday, July 05, 2012

Crutchfield Customer Review (What's this?)

Don't try to install your unit without purchasing the factory integration adaptor. This adaptor made the install seamless. It was plug-&-play with ease. Instructions were simple and on point. Took the old unit out, plugged in the new Kenwood receiver to the adaptor & plugged the adaptor into the factory amp plug. That's all it took and I was listening to a CD through the factory Bose amp and speakers. Done!

Pros: Makes the install very easy.

Cons: I had no problems at all.

Very nice

Written By Jim P, Laughlin NV on Friday, June 29, 2012

Crutchfield Customer Review (What's this?)

very easy install all color coded took 10 min's

Factory integration adapter

Written By MC, Indiana on Tuesday, May 22, 2012

Crutchfield Customer Review (What's this?)

Worked perfectly. Easy connection with colors matching the wires. After a quick call to Crutchfield to verify how to link one grouping of wires (three together instead of two). It went in without a hitch. Quick to adjust and hopefully I don't ever see it again! Works well with the Bose speakers (maybe even sounds better).

Pros: Easy install. Color match on the wires. Works well.

Cons: It does seem little flimsy, but once installed I hope not to have to deal with it again for quite some time.

Good, but could be a little better

Written By Rick, Seattle on Monday, April 02, 2012

Crutchfield Customer Review (What's this?)

This device does what it i supposed to do, and I would recommend it over trying to work directly with the preamp outs when going to the Nissan Bose amp. The sound output is great. I was worried about room in the dash for installation; but this is not a problem with a Pathfinder.

Pros: It works!

Cons: The control nobs, as noted elsewhere, are a bit difficult to work with. I also wish that the power, ground, and signal wires that come out of the molex were as long as the effective length of the speaker circuits. This would facilitate a neater installation.

Makes install clean and easy.

Written By Anonymous, Clayton, CA on Monday, April 02, 2012

Crutchfield Customer Review (What's this?)

Made connections to speakers and adjustment of amp easy.

Pros: Clean/secure connections.

Cons: Instructions were incorrect in that they missed discribing where the black/white stripe wire connected to. Also didn't list the option for the blue/pink stripe (if I recall correctly). A call to the techs provide the two details I needed to complete installation. Would make sense for them to juts add to the diagram to remove the need to make a call.

Works great

Written By Darren, Augusta,GA on Tuesday, March 27, 2012

Crutchfield Customer Review (What's this?)

Easy to pre-wire your harness before installing. Beware, the adjusting screws break easily so be careful not to use to much force.

Nissan/Infiniti Factory Integration Adapter

Written By Vin, Phoenix, AZ on Thursday, February 16, 2012

Crutchfield Customer Review (What's this?)

Perfect harness for upgrading line-level factory receiver/amp. Gain potts are easy to use.

Pros: High quality pots/wire. Good schematic.

Cons: None really

Good, but missing steps

Written By Tom, PA on Friday, February 03, 2012

Crutchfield Customer Review (What's this?)

The product works great, however, the instructions for the product left out directions for one of the wires. I had to call Scosche to find out what to do. (Nissan Pathfinder LE)

Pros: Works once everything is set up

Cons: incomplete installation directions for a Nissan Pathfinder LE

Very poor construction

Written By Anonymous, pittsburgh pa on Sunday, October 16, 2011

Crutchfield Customer Review (What's this?)

Out of the package, one wire was crimped through the insulation. I was able to tape this. After connecting the adaptor and adjusting the gain, the first potentiometer actually fell apart when I touched it with a screw driver. The other three gains did adjust and the adapter does seem to work. Very poor construction for an electronic device.


Written By Brian, Tucson, Az on Tuesday, July 05, 2011

Crutchfield Customer Review (What's this?)

95 Maxima, works as describe. Very easy install. IS not has cheap as others have said, put it in and adjusted the gain and worked perfectly. I would not try and strong arm it, but normal pressure is fine.

Easy install, directions need help

Written By Steve M., Phoenix, AZ on Saturday, July 02, 2011

Crutchfield Customer Review (What's this?)

Installing the new Kenwood KDC-348U in my wife's Infiniti QX4 was fairly easy with this adapter. All of the Kenwood wires matched the color coding of this Scosche-brand adapter. The only real issue I had was connecting the power antenna control, which required splicing 2 wires from the radio harness to one wire from the adapter harness - not covered in either the radio's or the adapter's documentation - fortunately, it only took one call to Crutchfield's excellent tech support to work through it.

Scosche CNN03 Wiring Interface

Written By Maximaaaa, Oregon on Thursday, May 12, 2011

Crutchfield Customer Review (What's this?)

It does work well, the amp sounds pretty good with it. However, as stated by many others, the knobs are HORRIBLY designed. Right out of the box one of them was broken and fell out. If someone is thinking of purchasing this, I would recommend going with something else(if there is) since the knobs are cheap.

Make install a snap

Written By EricWiz, Boston, MA on Monday, May 09, 2011

Crutchfield Customer Review (What's this?)

This made the install of my new sony hu a snap! solder the leads to the hu
interface, plug in and done!

It is a must have if you have the factory bose like I did. I had one small issue which
a call to support fixed in literally 30 seconds.

Scosche CNN03 Wiring Interface

Written By Anonymous, Ventura ca on Tuesday, April 05, 2011

Crutchfield Customer Review (What's this?)

This works great! Easy to install all parts needed tech help I needed was in
minutes super would recomend anytime!!!!!!!!!!!!!!


Written By PM, LA, CA on Saturday, April 02, 2011

Crutchfield Customer Review (What's this?)

Product comes with all the connects you need. My system required black to
B&W ground connection which is the only thing that I would not of guessed - all
other installation steps you won't even need instructions for - it's all pretty

I'm not sure the ohm conversion that takes place is the only requirement that
to be addressed. The new stereo works fine but the overall sound is not the
quality is not quite up to the previous Bose system that I had. This could be
because of the new stereo or it could be partially because of the Scosche - I
don't know.

They sure make it easy and painless to install. The same device elsewhere
costs much more.


Written By Jonny, Texas on Monday, March 28, 2011

Crutchfield Customer Review (What's this?)

Sounds great. A previous "professional" installation they didn't know to use one of these. Sounded terrible for years. Crutchfield told me I needed one. New receiver sounds great. When I was adjusting volume, a gain knob broke off. I didn't want to wait on replacement, so I used a pocket knife to adjust that pot. Be VERY CAREFUL with gain knobs!!!! Once I worked through that, it worked great, though. Thanks, Crutchfield for getting me this part at a reasonable price.

Scosche CNN03 Wiring Interface

Written By GMK, Hilo, HI on Friday, November 12, 2010

Crutchfield Customer Review (What's this?)

Made installing my Pioneer AVH-P4200DVD in my '02 Altima a snap. However, the
instructions are too generic. There are 2 harness connectors to the OEM dash but the
instructions implied there was only one harness. This resulted in having 2 wires to
factory remote amp. For the 02 Altima with premium Bose system, you must use
the BLUE/WHITE wire and not the Blue wire. Also recommend using butt connectors to
join wires rather than the stuff provided so you can have a neater bundle of wires.

Useless - Cheap

Written By JeffG, Richardson, TX on Sunday, October 31, 2010

Crutchfield Customer Review (What's this?)

Although I had read from other reviews that this item is "delicate" and even though this is stated in the information that comes with it, c'mon man. You can barely touch the thing and it breaks. Turns out, I didn't really need it.

Install for DDX8019

Written By Garrett, Breaux Bridge, LA on Tuesday, October 19, 2010

Crutchfield Customer Review (What's this?)

Well, the instructions are not complete. The pots are too flimsy. One of the screwdriver adapter
wheels came off (luckily after i turned it to the desired level) After that being said, the item
works as promised.

Easy Install and Great Service

Written By Paul K., St Charles, MO on Friday, October 01, 2010

Crutchfield Customer Review (What's this?)

I bought a used 05 Altima w/Bose and wanted to put in my Kenwood instead. Called and ordered this cable harness. I asked the Rep a few questions and he was very knowledgeable. It arrived in just 2 days. No hassle instructions made it very easy to install. I can see why some people might have trouble with the recessed pots. I used a plastic tool for TV alignment but one could be made from soft plastic or soft wood. Just be VERY gentle and they work great. The sound is better than OEM. Very pleased!

Works great

Written By Anonymous, Austin, TX on Wednesday, September 08, 2010

Crutchfield Customer Review (What's this?)

Works well and keeps the built-in Bose amp from distorting the output signal. Took off
one star for the instructions, which could have had more specific information to the
leads w/ respect to the harness model.

You get less than you pay for

Written By terrick, Bloomington, IN on Monday, July 12, 2010

Crutchfield Customer Review (What's this?)

I bought this because it was a suggested accessory when I purchased a Pioneer 2200UB for a '99 Maxima with Bose.

First, this adapter is cheaply made; one of the gain control knobs had already vanished before I was even able to hook it up. I decided to just go with it and see how it sounded before getting it replaced. Unfortunately, even after reading the instructions, making adjustments, and calling tech support, I had very little sound coming through the speakers. The sound that did come through was painfully distorted, even with the gain just a hair above zero. Crutchfield sent me a new one, but it gave me the same problem. After a short talk with a local audio store employee, I was told that a normal wiring harness would be fine, and he was right.

It's possible that the Pioneer head unit wasn't powerful enough in the first place. I don't know, though. And, sadly, neither did Crutchfield's tech support. So, if you run into the volume/distortion problem I had, save yourself some time and get a normal wiring harness.

Works Great

Written By Pinky, Seattle, WA on Sunday, June 27, 2010

Crutchfield Customer Review (What's this?)

I have a 2001 Pathfinder LE with a Bose system and this helped make my JVC
KW-NT3HDT install a snap. I didn't really have to adjust the gain settings,
everything sounded great post-install. No sound issues whatsoever.

Not as good as I hoped

Written By Mason, Fort Worth, TX on Thursday, January 28, 2010

Crutchfield Customer Review (What's this?)

There's nothing glaringly wrong with this adapter, but there's nothing great about it either. As others have said before, it takes some tweaking to get this to work well with your factory speakers. Be prepared to sit in your car for awhile and mess with the outputs on the adapter, the volume control and EQ on your stereo.

This went in an '01 Infiniti with a JVC head unit. I've noticed it's not as loud as the factory Bose, nor is the sound as crisp as it was before. Having said all that, I'm more annoyed with Bose and Infiniti for making it more difficult to get good sound out of an aftermarket deck than I am with the adapter itself.

Installation and instructions were a breeze.

Good product

Written By Gregg, Lewis Center, OH on Monday, January 04, 2010

Crutchfield Customer Review (What's this?)

Easy, straight forward directions. Nice to be able to solder at kitchen table vs. cramped over console. Gain adjustment with Ipod is way to go, only way to know true distortion limits of your speaker system. In this case, 96 Maxima with Bose system. A must have for this system.

Scosche CNN03 Wiring Interface

Written By George, Cincinnati, OH on Wednesday, July 29, 2009

Crutchfield Customer Review (What's this?)

I bought a HD Radio to replace my factory Bose Head Unit and CD Changer which the local big box store told me I'd have to replace everything even the speakers because of the built in amplifier but Crutchfield proved them wrong. One call and they shipped everything I needed to my door. I took my time and soldered all the wires to the harness so all I had to do was plug it in and screw the bolts back in the dash. Directions were easy to understand I had two extra wires which confused me so I called the tech guys and they let me know what to do with them. Now I'm enjoying quality HD Radio without replacing my factory amps and speakers. Thanks!

2003 Maxima with Bose

Written By Jim C, St. Louis, MO on Saturday, July 25, 2009

Crutchfield Customer Review (What's this?)

I had my car stereo replaced locally because my CD unit broke and I wanted an iPod connection. They used an amp integration harness specific for my car that used the preamp outputs, however, the sound quality and volume were not up to par with the original stereo. I suspected that the volume output level of my new car stereo was not high enough to drive the OEM Bose power amps properly. Since the Crutchfield harness uses speaker output and the level can be dialed in, I decided to give it a try. They installed it for free and the stereo now works great. My sound is back to the quality of the original factory levels that I wanted. A great product that saved me from needlessly replacing everything.

Scosche CNN03 Wiring Interface

Written By Travis, Arkansas on Saturday, April 11, 2009

Crutchfield Customer Review (What's this?)

Installed in my wifes 96 Maxima. Everyone I know that has one of these vehicles with the Bose system in it has had their cd player go out. I checked around here to see how much this adapter would cost and the answers were from $60-$100. I got it from Crutchfield for half price with the purchase of a reciever that cost $129 or up. Easy to install. JVC CDR600 is the reciever I got her to go with it and it sounds better now than it did with the factory Bose system. I'm so glad I called them (Crutchfield) that day and found out how easy it would be to make my wife happy with her stereo!

A few helpful hints......

Written By Scuba Steve, Palm Harbor, FL on Sunday, March 08, 2009

Crutchfield Customer Review (What's this?)

First off, I'd like to say that because of this adapter, the most difficult
part of my install was removing the dash panels on my 2001 Nissan
Pathfinder....yes, really. To make things even easier, here's a few points I
noticed when doing the install:

1. Make sure you have enough space behind your unit to fit all of wiring
this baby creates! (This is the only reason it only has four stars!)

2. If you have aftermarket speakers (and I mean good ones), you're going
to be able to crank the gain all the way up, BE CAREFUL, "all the way up" is
only around 3/4 of a complete turn and the screws are fragile!

3. You will want to spend the extra time getting the most gain you can.
Use a clean music source like a CD or MP3 player/iPod through the various
inputs. DON'T use the FM Tuner! It may be faster or more convenient at
the time of install, but you won't know if your speakers actually start to
distort or the radio static gets too loud to tolerate! (Sounds obvious, but in
my rush to get this thing in, I found myself doing this.)

4. Last but not least, do all the wiring at your kitchen table. You don't
want to be leaning over your center console crimping or soldering when
you could be sitting in a comfy chair listening to tunes with PLENTY of space
to work.

P.S. I cranked every type of music through this thing in the past two days,
and I can't hear a bit of difference from the stock wiring, just take time to
make good connections!

Scosche CNN03 Wiring Interface

Written By Lamar, Fort Washington, MD on Saturday, February 14, 2009

Crutchfield Customer Review (What's this?)

Was difficult to adjust, and one of the adjustment slots broke easily with very light pressure applied to it. Other than that, installation was very easy.

Works Well, Needs More Adjustment Options

Written By Joshua, Lancaster, PA on Thursday, October 30, 2008

I was using this product to integrate a JVC El Kameleon into the factory Bose system in an '03 Maxima. After all was said and done, it works.

My only gripe is that it doesn't account for all the speakers in the system when it comes to the gain controls. In my particular factory system, there are six speakers and a subwoofer. On the unit, there are only four gain control knobs (RF, LF, LR, RR). So, when it came to adjusting the sound settings in my menus on the head unit, it took me a couple days to figure out what setting I needed. I was getting NO bass with my new head unit, and that was because this adapter registers the subwoofer as another rear speaker, not a separate entity. Once I went in and turned off the "High Pass Filter" setting on my head unit (used for when someone has an independent sub), my sub came back. It's not a thumper, but it definitely completes the sound.

So, if you have my particular set-up, just beware that this adapter limits some sound adjustments, but you can get it to put out at least your factory sound (which is all I really wanted - the factory head unit is just garbage). It just requires some trouble-shooting and creative thinking.

Works well, but you probably don't need it

Written By Pete, Minneapolis, MN on Sunday, October 19, 2008

Crutchfield Customer Review (What's this?)

3 stars because it did work well and sounded pretty good, but I only give it 3 stars because I have since removed it from my system. If you are buying a car receiver on Crutchfield it probably has pre-amp outputs - use those instead of running the speaker outputs into this adapter and essentially just using an external device to create additional pre-amp outputs.

For me, my new receiver sounded okay with this adapter but not quite as good as I expected. So I tried running the pre-amp outputs from my head unit to the "speaker" leads (really the inputs to the factory amp) and it worked perfectly. There is no level balancing required of course, and it sounds better now too - voices are a noticeably more realistic and the stereo separation/combination sounds better.

So this adapter works well if you need it, but if you don't mind tinkering a little I would recommend considering not using it. I used an inexpensive "twisted pair" interconnect cable that I cut apart to get RCA connectors that I could wire into the leads to the factory amp.

Problems with Adjustment

Written By Greg, Indianola, IA on Sunday, September 14, 2008

Crutchfield Customer Review (What's this?)

This product worked okay overall. I had difficulty with the gain adjustment. One of the screws used to adjust the gain stripped with very little effort. I had to play around with this to get it adjusted properly. Be very careful with the screws!


Written By Ryan B, Orem, UT on Saturday, August 23, 2008

Crutchfield Customer Review (What's this?)

I was so surprised that the unit was as easy to install as it was! It worked beautifully with my current speakers and even made the music sound more crisp and crystal clear! It maybe the $200 Clarion CD receiver I installed too, but they both turned out great! I was disappointed however that the Adapter didn't come with the antenna adapter as well, so I had ONLY CD functionality and NO AM/FM radio. Nevertheless and notwithstanding, highly recommended product!

Nice product

Written By Samuel, Bronx, NY on Monday, August 11, 2008

Crutchfield Customer Review (What's this?)

Nice product, just had an after market ( JVC HD/CD ) unit installed, in my 02 Nissan Pathfinder and it sounds great with the Bose factory speaker amps. Had to take my time teaking it, But wow did it sound great once I found the right settings. Save alot of money, thanks.

Must Buy for Radio Installs - Eliminates Headaches!!

Written By Greg, Philadelphia, PA on Thursday, July 03, 2008

Crutchfield Customer Review (What's this?)

I installed this with a Kenwood kdc-bt838u into a 2001 Nissan Pathfinder and this Adapter ROCKS!! It replaced the factory installed Bose stereo.
I have never installed a aftermarket radio before and when I pulled the old radio out and saw all the wires and the 4 harnesses, I was like oh no!!!
Did some searching, found Crutchfiled and this adapter, and I was able to to crimp the connections together at my kitchen table then goto the car and plug the harnesses into the factory harnesses. WOW it was that easy , the stereo sounds terrific. Make sure you purchase a installation kit which is the hardware the holds the radio into the dash. I also had an issue with one left over brown wire and a quick and I mean quick call to crutchfield resolved my issues... I am a customer for life... Th