P.I.E Aux Input Adapter For Ford

Add an auxiliary input to your 2004-up Ford factory stereo (Model FRD04-AUX)

Item #: 469FRD4AUX

42 Reviews

This item is no longer available.

Original Price: $99.99

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This adapter lets you listen to a portable MP3 player or just about any other external source through select Ford sound systems, by converting the CD changer input on the factory radio into an auxiliary input. The 14-1/2" cable has the factory-compatible 16- & 24-pin connectors at one end and female RCA plugs at the other. Warranty: 90 days.

Note: Any CD changer connected to the stereo must be disconnected to use this adapter. 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.

P.I.E Aux Input Adapter For Ford Reviews

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42 reviews
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Written By A1fisherman, Orlando on Tuesday, July 29, 2014

Great! Love Crutchfield they have never done me wrong and all of my friends use them.

Great way to add external audio to factory radio.

Written By AlexB, Bronx, NY on Tuesday, April 09, 2013

Crutchfield Customer Review (What's this?)

This was very easy to install. It's plug and play nothing else. Works great I can now listen to my mp3, smartphone, satellite radio through my factory Shaker500 radio.

Pros: Easy to install, cheaper than buying a new head unit.

Cons: Price, could have been less expensive.

Works okay with occasional disconnects; Failed after 3 years.

Written By Josh L, Tennessee on Tuesday, October 02, 2012

Crutchfield Customer Review (What's this?)

I purchased this item in 2008. It worked well most of the time, though the radio would occasionally not recognize it was connected and the only way to fix it was to disconnect the car's battery so that it reinitialized. Unfortunately, it stopped working recently. Now, I either get just loud scratching noise or no audio at all out of the unit.

Pros: When it works, it works well.

Cons: Requires occasional battery disconnects Failed after 3 years

A Perfect Fix

Written By 06FordFusion, TN on Tuesday, September 18, 2012

Crutchfield Customer Review (What's this?)

For some reason, the 2006 Ford Fusion came stock with an Auxiliary Button that states in the owner's manual that it doesn't work. But, thanks to P.I.E., with their adapter, it works perfectly, like it should have from the factory. The AUX button works on the panel, and it can be controlled from the steering wheel, just like the other pre-installed stereo functions. Yay, PIE!!! I highly recommend it. Thanks!

Works well when it works

Written By John S, NJ on Sunday, July 29, 2012

Crutchfield Customer Review (What's this?)

I installed one of these in my Ford Five Hundred back in August 2006. Saturation of most of the FM band in the NYC metro area means that an FM modulator is still a staticky proposition. I had an initialization issue that required contacting P.I.E. directly; their ultimate solution differed slightly from the their own instructions provided in the packaging as well as those provided by Crutchfield, but it solved the problem and the unit worked. I tapped power from the 12-volt power outlet on the dash, which my XM receiver was also plugged into, and experienced a whine through the speakers when the XM was off or powering up. I rerouted the XM power cord and plugged it into the outlet inside the console and the whine went away.

The problem I have had with it is that periodically, and without warning, the radio will lose the initialization and no longer detects the AUX unit. This requires me to open the dash up and unplug the radio and AUX unit to allow everything to reinitialize. I've gotten pretty good at it and can usually have it done in under five minutes now, but it's still quite an annoyance. Unfortunately, over the weekend it quit again and this time it appears that the AUX unit itself is shot. I will be purchasing another one as I plan to keep the car for at least another year or two. The problem other users here have had with channels cutting out is one that I never encountered; hopefully that will be the case with a new one.

Pros: Allows you to keep the factory radio and overcome Ford's short-sightedness in providing an "AUX" button but no "AUX" input jack. Much cheaper than a new headset and steering wheel control interfaces as long as you don't have to keep replacing units.

Cons: Periodically "drops off" the head unit, then both the radio and the AUX unit have to be disconnected from power and reconnected to allow them to reinitialize.

Channel Failure

Written By Junk, PA on Wednesday, February 22, 2012

After 1 month the right channel would only work at random. Also, the sound quality was not that great. I would suggest just buying a new head unit.

Pros: Fairly simple install

Cons: Sound quality and channel failure

P.I.E Aux Input Adapter For Ford

Written By kdricks, Oregon on Friday, January 20, 2012

Crutchfield Customer Review (What's this?)

works great

P.I.E Aux Input Adapter For Ford

Written By Anonymous, on Monday, October 24, 2011

Crutchfield Customer Review (What's this?)

Great product

Written By Mile, Denver on Monday, September 26, 2011

Crutchfield Customer Review (What's this?)

Works great, couldn't install a aux. plug without this. Crutchfield has very fast shipping so that always help

P.I.E Aux Input Adapter For Ford

Written By JZ, Worcester, MA on Thursday, May 19, 2011

Crutchfield Customer Review (What's this?)

Easy install in 06 Mustang with Shaker 500 with the Mastersheet. Works great.

Works Great..Easy to Install (Mustang 06)

Written By Pavan, NH on Monday, February 07, 2011

Crutchfield Customer Review (What's this?)

Easy to Install.It took around 30 mins to Install in my Mustang.Sound Clarity is great, i am
glad i found this.

Works Great

Written By Curtis, Greenville, SC on Wednesday, January 26, 2011

Crutchfield Customer Review (What's this?)

Not a real easy install. The hardest part was removing and reinstalling the plastic center
radio bezell without breaking it which I managed not to do. You have to pull on it pretty
hard to get the clips to release. I installed the convertor in the plastic tray below the
retractable cup holder on velcro so it wouldn't slide around or vibrate. I cut a hole in the
end of the tray so I could connect the wiring harness from the inside which barely
reached. If I need to adjust it or replace it (if a channel goes out like other reviews stated)
then I can do it without removing anything. Works and sounds great. Switch the factory
stereo to aux and you can control your iPod volume and mute from the dash. The
convertor looks and feels cheap so that's why I posted 4 stars instead of 5. I hope it will
hold up for a long time.

Convenient Adapter

Written By Dave, Upstate NY on Sunday, November 07, 2010

While I could have upgraded the entire head unit to gain an mp3 input, I preferred the look of the factory unit to aftermarkets. Installed in about an hour. Plenty of room in the dash for the small adapter. Cables are plenty long. Found instructional videos on YouTube for head unit removal. Huge improvement over FM adapter. Adjustable gain on unit is great to compensate for weaker iPod output, however, it will clip if turned up too high with iPod on full volume. Otherwise, a great improvement to the factory stereo.

P.I.E Aux Input Adapter For Ford

Written By Michael, Dallas, TX on Saturday, April 17, 2010

Install was easy, in no time, left channel went out. Don't waste your money. Just by a new head unit.

Good Product

Written By Paul, Dallas, TX on Monday, February 15, 2010

Crutchfield Customer Review (What's this?)

This is the only line-in option I found for the 2006 Ford F250 SD. The truck is easy to work on and Crutchfield's step-by-step made it easier. The reviews aren't very positive, but again, this is about the only option for the 2006. I have no issues with installation, setting the gain pot, or sound quality.

Channel Failure

Written By Tim, Baton Rouge, La on Saturday, June 27, 2009

Crutchfield Customer Review (What's this?)

This adaptor worked great until the left channel went out.
Checked all connections & power OK.
I have this unit running off aux power switch on dash (2007 F-250 SD).
Sometimes I can get it to work for a little while when I flip the aux power
switch ON and OFF real fast.
Kinda leary about buying another after reading reviews.

P.I.E Aux Input Adapter For Ford

Written By Allan, Georgetown, Texas on Saturday, January 24, 2009

Crutchfield Customer Review (What's this?)

Installed easily but for some reason I didn't see the 12v hook up so that added a few minutes. Because of that I had the power on too long and killed my battery. Other than that mishap it works well and allows direct input at a low cost for the Ipod.

not worth it

Written By Joe, Ansonia, CT on Sunday, December 21, 2008

i installed this in my 2005Mustang GT with the factory Shaker 500 system so that i could get a line in for my sirius radio. it was a big improvement over the fm, however just about a day after the warranty was up the right channel stopped working. i should've just put the money towards a new head unit with a line in.

P.I.E Aux Input Adapter For Ford

Written By Jeffrey, Moline, Illinois on Sunday, May 04, 2008

This product does what it says it does. It connected my Pioneer Inno 2 to
the aux input of my 2004 Ford F-150 Lariet. The instructions were really
easy to follow and a call to Crutchfield made it even easier. The only down-
fall to this unit is that you get a faint whine at low stereo volumes.
Something I really like is the output strength adjustment on the unit. It
allows the user to adjust the volume of the AUX output so that it matches
the output volumes of the radio and CD.

P.I.E Aux Input Adapter For Ford

Written By Jonathon, Tuscaloosa, AL on Tuesday, March 25, 2008

Crutchfield Customer Review (What's this?)

Very quick and easy installation. I was already familiar with getting behind the radio in my F-150 so in all the installation probably took 10+ minutes. It provides great CD quality sound for my iPod and XM Radio. I had been using an FM modulator but I will never go back.

The unit requires constant connection to 12v power so I simply tapped into the wire running to my 12v aux plug.

The included wiring harness appears to be of top quality but the unit itself could be made of a stronger feeling plastic. It's a small complaint; I just don't like things that feel cheap.

With that said I would still recommend this unit to anyone who wants to keep their factory stereo and still enjoy CD quality sound.

Sales Advisor and Technical Support were outstanding

Written By Loren, Portland, OR on Wednesday, March 19, 2008

Crutchfield Customer Review (What's this?)

Sales Advisor and Technical Support were outstanding. Both volunteered information that I used and found very helpful.

Product works great so far (two weeks). Instructions were very good over all. Omissions, throwing in two wiring splicer would have been nice, no detail with regard which wire was power and GND. Technical support knew the answer and volunteered guidance as to where to connect these to the factory wiring harness.

Plug and Play

Written By dewy, Virginia on Monday, February 11, 2008

Crutchfield Customer Review (What's this?)

I am pleased with the performance of this item in my 2004 Ford F-150 with the factory 5 disk in-dash head unit (without factory subwoofer). Although the instructions said to remove the trim and the radio from the dash, I was able to swing the glove box all the way down, and then reach up behind the radio through there. I could feel the empty connection on the back of the radio. It was easy to plug the connector into it. I also tapped into the cigarette lighter easily through the glove box opening. I then mounted the PIE unit on the metal support behind the glove box. It has easy access in the event I need to get to it...I just have to swing the glove box down. Once installed, it worked just as advertised. I have no static or interferance of any sort. I installed the RCA jack lead into the PIE unit and ran it down under the carpet and up through the bottom of the inside of the console. I then ran it out of the very front of the console where there is a small storage area (had to drill a small hole for the cable to come out...but it's in the front of the console and cannot be seen). Now, I can put my ipod in my console cupholder when I'm listening to it...and then stow it in the front console storage area when I'm not...no need to disconnect it, and no visible wires. And it's also out of sight to prevent a would-be thief from seeing it.

Not So Great

Written By Mojo, California on Sunday, January 27, 2008

Crutchfield Customer Review (What's this?)

Installed really easy in my 2005 F-150, sound was OK, worked fine for about a month then the right channel blew. Based on many of the reviews, I would say no to this product. You take a chance with a channel blowing.

Works great - eay install

Written By Jeff, Columbus, OH on Monday, January 21, 2008

Crutchfield Customer Review (What's this?)

Installation was quite easy and I am not the type of person that often disassembles my car's dashboard. Crutchfied's model specific instructions made it easy to remove the dashboard panel and hooking up the box was straightforward. For power, I just the wires around the terminals for the cigarette lighter and reconnected the power harness.

Once installed, it worked great! I don't have to crank up the stereo volume up as I had to with the FM transmitter. Since installing this, I haven't listened to anything in my car except my iPod. If you are frustrated with your FM transmitter, I highly recommend this easy DIY project.

P.I.E Aux Input Adapter For Ford

Written By Scott, NH on Saturday, December 15, 2007

Crutchfield Customer Review (What's this?)

A channel failed on the first one I bought. But, the sound was good so I decided to buy another. I figured it was bad luck. A channel failed on the second one I purchaced and--a few days ago--on its replacement.

P.I.E Aux Input Adapter For Ford

Written By Philip, Flagstaff, AZ on Monday, November 12, 2007

Worked great for about a month then a channel blew. Sent it back second one did the same this time in only one week. Never really gave me the kind of volume I wanted anyway.

Quick and Easy

Written By Master, La Crosse, WI on Wednesday, June 06, 2007

Crutchfield Customer Review (What's this?)

'04 Ford F150 Super Crew ... I was a little worried as i have a six disc factory changer ... but the install was really simple, no complaints, easy mounting, hooked up well and works great. Grounded it to the frame, and power went to the cigarette lighter. Switch to Aux ... i only get some feed back when i have my iPod plugged into the cigarette lighter charging when i'm listening ... so i just charge it when i'm not listening ... works for me for the price!

P.I.E Aux Input Adapter For Ford

Written By Dave, Springfield, OR on Wednesday, May 16, 2007

Crutchfield Customer Review (What's this?)

The installation of the product in my 2006 Focus ZX3 was straight-forward and took less than an hour. OEM ground next to the glovebox, power from the cigarette lighter. The sound was excellent and operation was trouble-free. Simply press the AUX button and PIE is displayed. 1000% better than FM.
My low rating is due to the fact that, after less than 6 months, the left channel went dead. Diagnostics revealed the cause to be in the adapter itself. Unfortunately, the product only has a 90-day warranty so I'm out $100.00+.
Most after-market companies provide a 1-year warranty. If PIE feels that they make a competitive product then I feel they should stand behind their product for at least that long.
I should say that the tec I spoke with at Crutchfield told me that my experience was not the norm.

P.I.E Aux Input Adapter For Ford

Written By Craig, Rocklin, CA on Monday, February 19, 2007

Crutchfield Customer Review (What's this?)

After trying to use a FM transmitter on both an ipod and Zune (with horrible results), I purchased the PIE FRD04-AUX unit and had it installed in my 2005 Freestyle by a local installer. This unit works as advertised... FANTASTIC. Virtually no ignition noise, and works great with either my daughter's ipod or my Zune. I used a 6' RCA cable/ adapter, and had it fed to the center console which houses a 12V plug. My system still looks 100% stock, and allows me to hide the player out of sight. I would recommend this for anyone wishing to retain their stock head unit in the Freestyle.


Written By Mike, Mountain Home, ID on Sunday, January 28, 2007

Super easy to install. just splice 1 wire into your 12v power and 1 wire to ground. plug it into your radio, hook up an RCA cable and satellite radio/ipod/mp3 player. power up and press the aux button on your radio. recognized it on mine. Shows up PIE. sound quality of sirius is 100 times better than using FM transmitter. Super Clear. worth every penny

Excellent Product

Written By Laura, Mooresville, NC on Saturday, December 30, 2006

Crutchfield Customer Review (What's this?)

Installed in my 2005 Mustang and love being able to connect my iPod to it. Installation is rather easy, except when having to reconnect all the harnesses when reassembling and "packing" all the cables in the dash.

P.I.E Aux Input Adapter For Ford

Written By Casey, Mckinney TX on Monday, December 25, 2006

Crutchfield Customer Review (What's this?)

Great product! Very highly recommended!! Installation is very simple. I tapped the 12V and ground off of the cigarrette lighter in the dash. To install this in my F-150 it took me about 45 minutes including dis assembling the dash and reassembly. THe sound quality is night and day over that crappy FM modulator I was using with my sirius unit!!

Cables could have been longer, but I aint complaining!!

P.I.E Aux Input Adapter For Ford

Written By John, Pine Beach, NJ on Thursday, December 14, 2006

Crutchfield Customer Review (What's this?)

Excellent product!! The installation was easy and clean. I was able to zip tie the box to a bracket under the dash, where access to the plugs is easy. For the ground, I used an OEM grounding point and tapped the power from a spare space in the fuse block. Sound from my Sirius Sportster is now CD quality, way better than through the FM transmitter. The only negative I can say is that the harness they provide for connection from the control box to the stereo could benifit by being slightly longer.

Awesome PIE Adapter, Great For IPods!

Written By Paul, Medford, NJ on Thursday, December 07, 2006

Those looking to hook up your ipods to your Mustang, look no further than this! Great sound quality and very easy installation! I installed it on my shaker 1000 and it works great! Highly Recommend for Mustang owners!

Sirius PIE connection.

Written By moss, Munster IN. on Monday, September 18, 2006

Crutchfield Customer Review (What's this?)

I installed this device in my 05 GT Mustang with the Shaker 1000 system. I can now listen to CD quality Sirius Radio on my factory head unit. Works perfect, sounds better than the FM modulator I use in my other car.

Works Great!

Written By Racerraj, Miami, FL on Monday, August 21, 2006

Crutchfield Customer Review (What's this?)

I hated the FM transmitter. My old Mustang had an aftermarket stereo with an AUX port. I couldn't wait to enable it in the new one. No more static, and better sound qualitiy.

Directions were perfect, install was easy.

P.I.E Aux Input Adapter For Ford

Written By Dean, NC on Tuesday, July 18, 2006

The PIE interface box was very easy to install in my 2005 Mustang with the instructions included from Crutchfield. I was pleasantly surprised by the sound quality coming from my newly activated AUX port.

Fantastic Addition for a 2005 Mustang

Written By Mark, Cleveland OH on Sunday, July 02, 2006

Crutchfield Customer Review (What's this?)

I've been waiting for a way to listen to my iPod in the car. After trying several FM Transmitter options, all dismal failures, and almost giving up, I found the PIE adapter.

Installation was almost a breeze, Crutchfield instructions were very good. Getting the center console off and over the parking brake was the worst of it. The PIE instructions advise that the factory installed CD player won't work after installation...at least for the Mustang that was wrong. My CD player and changer work as before, pressing the AUX button on the radio brings just brings the adapter into play. Sound is absolutely great.

The 12v constant power supply issue mentioned in other reviews wasn't a problem. I wired the power and ground leads to the power outlet in the console, running all of the wires into the console, including audio input from ipod (Ford has a handy "hatch" inside the console which is where I ran this cable).

I used velcro to secure the adapter inside the radio/controls stack.

I absolutely recommend this option. I keep my iPod in the center console, out of site.

This is worth getting.

P.I.E Aux Input Adapter For Ford

Written By Ben Caras, Las Vegas, NV on Saturday, April 29, 2006

Crutchfield Customer Review (What's this?)

This adapter should have been an easy install however that was not the case. The need for constant power to the adapter caused more dificulty than it was worth. After tapping in to the power already being supplied to the factory head unit, the adapter would not function. Convinced I had installed the adapter incorrectly, I paid an installer at a local stereo shop to do it for me. Unfortunately, he was also unable to get the adapter to work. Only reasonable conclusion left: The unit was deffective.

Great product, but...

Written By Antony, Marin County, CA on Thursday, April 27, 2006

Crutchfield Customer Review (What's this?)

Got the product and the Crutchfield instructions. Everything as ordered...

The product: Great. Works exactly as advertized. Sounds great. The AUX button on the Ford factory stereo is now enabled (and shows "PIE" when selected). This is such an improvment from the old FM based input I was using to listen to my iPod. No comparison. I highly recommend it.

The instructions. Poor. Far too generic and really not model specific enough. Removing the dash on the 2005 F250, whilst not difficult, is not exactly trivial. There's a whole bunch of connectors to remove, some are easier than others. None of this is detailed. There's also the fact that the PIE adapter requires 12v "always on" (or at least, on when your stereo's on) power. There was NO info in the install guide as to where I could tap into a 12v supply - or even that it was required. Fortunately, it didn't take me long to figure out that I could tap into the accessory adapter on the right of the dash. The wires were just long enough. There's also the issue of where to "hide" the PIE adapter. If you have the Lariat trim with the ACC (the digital climate control), then there's no room directly underr the stereo. I found the [power] wires were just long enough so that I could tuck the PIE behind the 4x4 control switch.

Great Product!!!

Written By Kevin, Des Moines, IA on Friday, March 31, 2006

Crutchfield Customer Review (What's this?)

It took me about 45 minutes to install, but only because I was very carefull and nervous about removing the front panel. I was nervous for no reason. If I had to install another one it would take 10 minutes. Piece of cake. Product works perfect. I thought the price was a bit much, however $99 seems to be the going price everywhere.
Instructions were helpfull and I recieved the product 3 days after I ordered it. Couldn't be happier.

P.I.E Aux Input Adapter For Ford

Written By William, Newtown, PA on Tuesday, March 14, 2006

Crutchfield Customer Review (What's this?)

I installed this adapter in my 2005 F150 FX4 pickup in about 10 minutes. This was one of the easiest installs I have ever done. The way the interface works with the radio is awesome. The output level adjustment is perfect for this device and works flawlessly to make my Sirius Sportster play at the same level as the cd player.

Hands-on research

What's in the box?

Download owner's manual

  • Auxiliary input adapter for Ford/Lincoln/Mercury
  • 14.5" Connection harness
  • Installation instructions

Product Research


Overview: The FRD04-AUX converts the Rear Seat Entertainment port of specified OEM Ford/Lincoln/Mercury "CAN-BUS" radios to RCA level audio inputs. This adapter features a built-in audio level adjustment circuitry (from 0 to +20 dB/0.475-4.75V) which allows you to match the audio levels of the auxiliary input to other sources on your factory receiver. Note: This adapter is not compatible with vehicles that are equipped with the OEM Rear Seat Entertainment system, navigation, or factory satellite radio.

Compatibility: This adapter is compatible with some, but not all, of the radio models found in the following vehicles:

  • 2004-2008 Ford F-150 Pickup
  • 2005-2012 Ford F-250 Pickup
  • 2005-2012 Ford F-350 Pickup
  • 2008-2011 Ford F-450
  • 2005-2009 Ford F-550 Pickup
  • 2007-2010 Ford Edge
  • 2007-2012 Ford Expedition
  • 2006-2010 Ford Explorer
  • 2007-2010 Ford Explorer Sport Trac
  • 2005-2007 Ford Focus
  • 2005-2007 Ford Freestyle
  • 2006-2009 Ford Fusion
  • 2005-2009 Ford Mustang
  • 2006-2008 Lincoln Mark LT
  • 2007-2010 Lincoln MKX
  • 2007-2009 Lincoln MKZ
  • 2007-2012 Mercury Navigator
  • 2006 Mercury Zephyr
  • 2006-2009 Mercury Milan
  • 2006-2010 Mercury Mountaineer

Note: Please check "Outfit My Car" to verify compatibility.

Connections: The adapter has a 14.5" cable to interface between the factory radio and the adapter; a 16-pin Molex harness plugs into the factory radio and a corresponding harness connects to the OEM cable removed from the radio; the other end has a 10-pin Molex which plugs into the adapter.

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.