Name: PAC RP4-FD11 Wiring Interface
Brand: PAC
SKU: 541RP4FD11
Price: 119.99 USD
Availability: InStock
Rating: 4.5 (386 reviews)

Overview

by Crutchfield's

PAC RP4-FD11

PAC's RP4-FD11 radio replacement interface lets you replace the factory radio in select 2005-up Ford, Lincoln, Mazda, and Mercury vehicles. You'll still retain your factory steering wheel audio controls, rear seat entertainment (RSE) system, retained accessory power (RAP), and the use of your Ford factory amplifier, if present.

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PAC RP4-FD11

The RP4-FD11 interface eliminates the need for the steering wheel audio control adapter that's usually required for a Ford-built vehicle, saving you some more cash. Warranty: 1 year.

Important Note: You'll lose your fader control if you have an amplified system in your vehicle. The RP4-FD11 adapter does not work with your SYNC system; you'll need PAC's MS-FRD1 adapter to maintain that functionality. See Details for a list of compatible car stereos.

Please enter your vehicle information or call an Advisor at 1-888-955-6000 to find out if this model is compatible with your vehicle.

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What's in the box:

PAC RP4-FD11 Wiring Interface owner's manual

Radio replacement/SWC interface module (for Ford/Lincoln/Mercury)
RP4-FD11 wiring harness
12" Steering wheel control harness (4-pin connector to 3.5mm/blue wire)
Instructions

MFR #RP4-FD11

Featured review

I had Crutchfield do the connection on the radio to truck harness with the steering wheel control module. Saved so much time, it's worry every penny! And it looks so neat. I did my Jeep before by myself and it took a long time.

Joe from Osceola, IN

See all 386 reviews

Customer Q&A

Will this use the existing microphone already in my 2010 F150 FX4?

This would not use the factory microphone in your truck. Generally, it is necessary to use the new microphone included with the aftermarket radio that is being installed.

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PAC RP4-FD11 Wiring Interface reviews

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Details

Researched by Crutchfield's Stacey B.

Product Research

Features

Radio Replacement Interface: The RadioPro4 (RP4-FD11) is a radio replacement and SWC (steering wheel control) interface that comes pre-loaded with amplifier retention and SWC software, navigation based output signals, plus firmware that retains many of the vehicle's original safety and convenience features when replacing the factory radio with an aftermarket head unit.

Vehicle Compatibility: The RP4-FD11 interface allows the replacement of a factory radio in select Ford/Lincoln/Mercury vehicles with the CAN-bus system. The RadioPro4 (RP4-FD11) is compatible with select 2005-up Ford, Lincoln, Mercury vehicles with MSCAN databus radios.

Make	Model	Year
Ford	Edge	2007-2010
	Escape	2008-2012
	Expedition	2007-2012
	Explorer	2006-2010
	Explorer Sport Trac	2007-2010
	F-150/250/350/450	2009-2012
	Flex	2000-2012
	Focus	2008-2011
	Freestyle	2006-2007
	Fusion	2006-2012
	Mustang	2005-2012
	Taurus	2010-2012
Lincoln	MKS	2009-2012
	MKT	2010-2012
	MKX	2007-2010
	MKZ	2007-2012
	Navigator	2007-2012
	Zephyr	2006
Mercury	Mariner	2008-2011
	Milan	2006-2011
	Mountaineer	2006-2010
Mazda	Tribute	2009-2011

Notes:

Not compatible with 2008 F-250/350/450 with XL trim (fleet vehicles).
Only compatible in base model 2013-2014 F150 trucks equipped with the center stack radio.

Retained Features: Using this interface will retain factory features such as steering wheel controls (SWC), Aux input, rear seat entertainment (RSE), rear seat control (RSC) and, the factory audio amplifier whenever the original radio is removed. The RP4-FD11 also provides data bus driven outputs such as retained accessory power (RAP), vehicle speed sensor (VSS), illumination, reverse trigger, and parking brake.

If the vehicle is equipped with the Sony factory stereo system, adjust the fader to your preferred front/rear setting before the factory radio is removed. Neither the aftermarket radio nor the RP4-FD11 interface has the ability to adjust the factory amplifier's fader.
The RadioPro4 (RP4-FD11) does not retain your vehicle's factory SYNC system.

Steering Wheel Control: The interface comes pre-programmed for all of your compatible vehicle's factory SWC functions and does not require programming, unless you wish to re-assign the SWC functions to different buttons. The SWC functions can be easily programmed (see instructions). The interface will retain programming even if your vehicle's battery is disconnected. The SWC harness contains a Blue/Yellow wire and a 3.5mm connector (you will only use one of the connectors, based on your type of aftermarket radio)

The Blue/Yellow wire supports Kenwood, Newer JVC, OEM and Blaupunkt radios.
The 3.5mm jack supports Alpine, Jensen, Older JVC, Clarion, Pioneer, Sony, Valor, and Dual radios.
Not compatible with Soundstream head units.

RadioPRO App: PAC offers a Windows compatible RadioPRO App software program to help you configure the interface.

Accessories

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Q&A

34 questions already asked

Can this units wiring be used like a T-Harness? Can i run my amp outputs back through the factory wiring to the door speakers?

[ Nathaniel Mar 25, 2023 ]

1 answer

This wouldn't function quite like a T-harness. It is intended to help replace the factory radio. However, if you're replacing the radio in a non-amplified factory system, and if you're also using an aftermarket amplifier, then it would be possible to connect back into the factory speaker wire through this harness.

[ ZACHARY Mar 26, 2023 ] Staff

I have a 2010 Mercury Milan with the Sony factory system (amp, speakers). Once connected, does this allow for my new stereo to send line level OR speaker level audio to the Sony amp? Seems to me the harness would need to tap into line level from head unit so its not sending a speaker level signal to the amp.

[ Kevin Oct 10, 2022 ]

1 answer

This one only would send a line level to the factory subwoofer, Kevin. This interface has speaker level inputs only really. Two RCAs on this interface feed the factory subwoofer like mentioned above but the other four RCAs on this interface do not connect to preouts on the head unit. Two are for an Aux input and two are rear seat entertainment for models that have that feature. If you are having any issues at all with install or setup, make sure you give us a call at 1-888-292-2575 and our Technical Support team can help! We are available 9-8 weekdays and 10-7 weekends eastern time.

[ Bo Oct 10, 2022 ] Staff

Will this use the existing microphone already in my 2010 F150 FX4?

[ Christopher Oct 06, 2022 ]

1 answer

This would not use the factory microphone in your truck. Generally, it is necessary to use the new microphone included with the aftermarket radio that is being installed.

[ ZACHARY Oct 06, 2022 ] Staff

Will this retain my back up camera? 2012 Ford Escape limited with navigation radio

[ JAIME Aug 15, 2022 ]

1 answer

This interface does not retain the OEM back up camera in that vehicle, no. You will want to contact an Advisor by phone (1-800-324-9695) or online chat to discuss compatibility with your factory system. They will be able to pull up your vehicle and see if this will integrate. If it does not, then they will also be able to discuss other options with you.

[ Thomas Aug 15, 2022 ] Staff

Do I need an additional antenna adapter also or does this harness already do that for Ford fusion adding aftermarket Kenwood?

[ Jeff Jun 12, 2022 ]

1 answer

Good question. That PAC adapter does not provide any antenna adapter and typically you will need one for a Ford Fusion. Please give us a call at 800.324.9695 so our advisors can find the correct antenna adapter for the year of your vehicle.

[ ARIELLE H Jun 12, 2022 ] Staff

Will this work with a 2010 Ford Escape?

[ Jorge21377 Apr 28, 2022 ]

1 answer

You will want to contact an Advisor by phone (1-800-324-9695) or online chat to discuss compatibility with your factory system. They will be able to pull up your vehicle and see if this will integrate. If it does not, then they will also be able to discuss other options with you.

[ KENNETH Apr 30, 2022 ] Staff

This is offered as a package with a Jensen radio I wish to purchase, but the instructions do not state which number setting to use for Jensen, do you know which setting is to be used?

[ Nick Apr 10, 2022 ]

1 answer

I believe it is #7, #7 covers Pioneer and "other"

[ JUSTIN Apr 11, 2022 ]

Will this work with an aftermarket amp and speakers?

[ Tillman Oct 15, 2021 ]

1 answer

My installation did not include after market amp or speakers. Good luck.

[ Mart Oct 15, 2021 ]

2010 Ford Edge I installed the interface and all controls work fine but the factory subwoofer is playing the Sirius commercial really low all other speakers work fine.. Really confused??

[ CHRISTOPHER Sep 19, 2021 ]

1 answer

Hello this is maybe because your streaming kbps is low check your service and ask for this compressed streaming have to be in 320 kbps

[ ELIEZER Sep 20, 2021 ]

Will I lose my sync in my f150 2011 larit supercrew?

[ JACE Jun 10, 2021 ]

1 answer

This wiring interface does not retain the SYNC system. We may have gear that can retain it with a compatible radio. I recommend contacting an advisor by calling 1-800-324-9695 to check.

[ JASON Jun 29, 2021 ] Staff

I have a 08 ford edge with steering wheel control and factory amp, will this work for me?

[ Nestor Jun 07, 2021 ]

1 answer

Not completely sure, but it worked in my 08 Ford Escape. Hope that helps...

[ DAMEIN Jun 07, 2021 ]

After install, unit contantly cycles from radio to Aux input to BT audio. any ideas? Steering control does not work either. 2010 F-150 FX2 Jensen Car689

[ JEFFREY May 17, 2021 ]

1 answer

Recheck the Pac harness. Make sure all connections are made well. Also, make sure that the steering wheel connection (3.5mm plug) is properly connected. Also, make sure that the Pac Harness is set to the appropriate number that corresponds to your Jensen. I think it's #7, this is located on the Pac module. Try this, if still not working, try reprogramming the Pac module. You can find the reprogramming instructions in the box that came with the Pac Harness, if not, you can contact Pac diron their website or crutchfield if you bought from them. If still not working, unit could be defective or the radio may be. Hope this helps. Blessings to you

[ HARRISON Jul 30, 2021 ]

Will this work on a 2013 F 150? Under details it lists 2009 - 2012, yet is in part of the package for my 2013 F 150

[ DAVID Feb 03, 2021 ]

1 answer

Should

[ JOHN Feb 03, 2021 ]

I have a 2011 Ford Expedition and have installed an Alpine iLX-W650 and RP4-FD11 interface. Everything seems to work fine except that when I am connected to Apple CarPlay, the sound from my iPhone does not work, except Navigation apps (e.g. Waze). No other functions (music, phone) have any sound. How do I fix?

[ AARON Dec 04, 2020 ]

1 answer

If you purchased the product from Crutchfield, feel free to contact our Tech Support team. Our toll-free Tech Support number is printed on your invoice, and is also available under the "My Orders" tab in the "My Account" section of our website. If you did not purchase the unit from Crutchfield, then you may want to contact the manufacturer.

[ KRISTINA Dec 16, 2020 ] Staff

What radio select setting to use for the Boss BV800ACP units? 7?

[ ADAM Apr 26, 2020 ]

1 answer

[ KRISTINA May 07, 2020 ] Staff

Will this work with jvc kw-x840bts?

[ Tim Jan 26, 2020 ]

Will this work with jvc kw-x840bts?

[ Tim Jan 26, 2020 ]

1 answer

Should work if trying to retain all chimes and wanting to keep steering wheel controls. Make sure that the harness is for your vehicle: year make and model.

[ HARRISON Jul 30, 2021 ]

Used this in a 2008 Ford Escape with a Jenson radio. Everything is working but not my factory sub and amp? Please help.

[ Charles Jan 04, 2020 ]

1 answer

If you purchased the product from Crutchfield, feel free to contact our Tech Support team. They can walk you through the settings on the product and see if there may be a fix. Our toll-free Tech Support number is printed on your invoice, and is also available under the "My Orders" tab in the "My Account" section of our website. If you did not purchase the unit from Crutchfield, then you may want to contact the manufacturer.

[ KRISTINA Feb 03, 2020 ] Staff

How do the purple and green sub RCA's connect if you only have one sub RCA in the headunit?

[ Trace Nov 12, 2019 ]

1 answer

[ KRISTINA Nov 21, 2019 ] Staff

I have a 2007 Explorer with a factory DVD player for the rear seats. Will it still work if I use the RP4-FD11 harness?

[ Jacob Mar 04, 2019 ]

1 answer

With the proper installation accessories and a compatible aftermarket stereo model, yes; the factory rear seat DVD system can be retained using the PAC RP4-FD11 For additional assistance and personalized recommendations, feel free to contact us directly by phone or through our online chat service: https://www.crutchfield.com/support/ContactUs.aspx

[ Ryan Mar 09, 2019 ] Staff

Will this Harness and Interface retain the AUX and USB port that come factory in the center console. I'm assuming they were made for the SYNC system but i would like to keep function of those two ports in a 2012 Ford Fusion?

[ Juan Feb 08, 2019 ]

3 answers

I have a 2011 f150 with the same sync system with those 2 ports. They still have power but don't connect to the stereo. So the USB can still be used to charge devices. If you buy a stereo that will retain the sync then they should still work for that. I did not because I didn't like sync anyways

[ Nicholas Feb 09, 2019 ]

Yes I still have them in my 2012 f-150

[ MIKE Feb 08, 2019 ]

On my 2012 F150 I was able to keep the aux jack, but the usb has not worked. You will not use sync, but you can use voice control like you would with sync. All the other controls work.

[ KYLE Feb 08, 2019 ]

I want to be able to use hands free devices, however I have never been able to use this feature in my 2011 Ford Escape. Is there a wire I need to connect to be able to allow this feature?

[ Anna Jul 09, 2018 ]

3 answers

Unfortunately this unit is supposed to work with some of your hands free devices. I have a 2007 Ford Expedition I installed in with a Clarion radio and GPS and I'm only able to use the volume control, sometimes it works and sometimes it doesn't. It will tell you what you might use it for there is a setting on the box make sure you switch it to what you need. Good luck, call Cruutchfields there techs are great..

[ JOHN Jul 11, 2018 ]

Yes you will! Prior to installing my system I call Crutchfield for technical support and they identified each wire and where to connect in on my 2008 Ford Expedition.

[ Thomas Jul 10, 2018 ]

I installed this product and my phone automatically connects... music and phone calls...

[ TEENE A Jul 09, 2018 ]

Does this kit allow for wiring of factory Sirius radio as well?

[ James Jun 18, 2018 ]

1 answer

No it doesen't-the factory sirius radio is built into the factory radio you have to buy the siriusxm sxv300v1 tuner to listen to sirius xm

[ David Jun 18, 2018 ]

I see the wiring diagram shows a purple/green RCA connector for the factory sub. The manual doesn't indicate where they should be connected. Do they plug into the back of the aftermarket radio?

[ Jack Apr 11, 2018 ]

1 answer

I dont understand your question. If you sent me pics i could probably help you better.

[ kenneth Apr 17, 2018 ]

I've connected everything to my aftermarket radio harness and plugged in to the radio, but have no display/light on the radio. It's receiving/ejecting cds just fine. Am I missing a wire (that might need to be hardwired to the vehicle)?

[ Jonathan Oct 24, 2017 ]

2 answers

From the radio is there an orange colored wire not connected? Typically that's the dimmer connection and not every vehicle connects to it...

[ MARK C Oct 30, 2017 ]

[ KRISTINA Oct 30, 2017 ] Staff

Will this retain the sync system in my 2012 ford flex se?

[ Hugh Sep 09, 2017 ]

2 answers

[ KENNETH Sep 09, 2017 ] Staff

Your Bluetooth will work and your steering wheel controls will work but as for the voice commands, they will not work.

[ KENNETH Sep 09, 2017 ]

Will this harness allow me to retain my factory backup camera? (2011 Ford F250 Crew Cab with navigation and factory subwoofer)

[ Joseph Jun 26, 2017 ]

1 answer

[ KENNETH Jun 27, 2017 ] Staff

Do ALL the steering wheel controls work? I know the volume, source, ect... work, but what about the phone buttons?

[ Cory Aug 21, 2016 ]

1 answer

[ KRISTINA Aug 22, 2016 ] Staff

Can the harness work on a 2011 Lincoln MKS? I want to install the OEM navigation in the vehicle.

[ Antonio Dec 05, 2015 ]

1 answer

[ Jeff Dec 05, 2015 ] Staff

I want to install this in a 2012 Ford Expedition XL, with factory navigation system and amp. Does this harness provide parking brake and reverse indicator signals so I don't have to go crawling under the dash looking for the correct wire to tap into?

[ Michael Aug 01, 2015 ]

1 answer

For details on fit or installation please contact an Advisor by phone (1-800-324-9695) or online chat. They will be able to pull up your vehicle and give you the details on if this will fit and what you will need for an installation in your vehicle.

[ KRISTINA Aug 02, 2015 ] Staff

i have a 2008 Escape XLT, which does not have SWC (just cruise control) or a factory amp. is this item overkill or can i just buy a wiring harness? it's been a while since i've installed a car stereo, but i've never had to use one of the blue things before. usually a $10 wire harness covers it. Thanks.

[ David Nov 23, 2014 ]

5 answers

Yes, this is not necessary for your application.

[ JEFF Nov 26, 2014 ]

David, I don't now why you would want this PAC RP4-FD11 interface? This is basically for SWC (steering wheel control) and it worked great for me! I didn't spend $149 on it either!!! I just bought PAC RP4-FD11 05-Up Ford/Linc/Merc interface/SWI Item #: 541RP4FD11 for my Daughter's 2006 Milan and it worked GREAT with the JVC KWR500 CD Receiver. You do have to pair them up at the end BEFORE you push everything back into the dash! I would THINK just the Ford/Lincoln/Mercury Kit Late Models, DD or the Ford wire Harness for Ford/Linc/Merc/Hyun 03-up woukld be all you need plus the Chrysler/GM/Ford Antenna Adapt Motorola M to OEM antenna F hook-up. I used to install radios in cars back in the 70's, Boy, times have changes with easier hook-ups with cable plugs! Whew,,,,,,,, my neck would be sore back under those dashes! lol. I had no problems but YOUR hook-up should be easier with out SWC and NO amp! Good Luck and use your cell phone to call their Install Support Team, I am sure they will help you out if you get stuck?

[ TOM Nov 24, 2014 ]

This is just if you have steering wheel switches to turn up volume, source, or change channels. If you do not have those on steering wheel you don't need this item. I have a 2010 Edge with steering wheel controls and had to have this to operate radio from the steering wheel.

[ CHAD Nov 24, 2014 ]

You only need it if you have steering wheel controls and want to use them for the aftermarket stereo. I have the steering wheel control for the stereo but decided not to use this, since i could just as easily reach the stereo. Your cruise control will still work without it, so you will have no use for this.

[ JAMES Nov 24, 2014 ]

I purchased this to retain the steering wheel controls, factory amp, and factory auxilary imput. Without needing those, i dont see any reason why you would need this interface. The regular wiring harness should suffice.

[ Jason Nov 24, 2014 ]

Hey I have a question for all using the product. If you were to do this after it was plugged in are you able to unplug the interface and do the process again? I'm not getting anything out of my SWC at all. ** Radio Select Switch: The radio select rotary switch on the side of the interface must be adjusted to the proper radio setting before plugging the interface into the vehicle.**

[ TAHEEM Oct 16, 2014 ]

2 answers

Presenting the interface is mandatory for the head unit to work. Read the instruction provided with the interface to correctly set your radio up.

[ PETER May 13, 2016 ]

We have not received any answers from other customers on your question. I would recommend reaching out to an Advisor by phone (1-800-324-9695) or online chat. They should be able to help answer your question.

[ KRISTINA Oct 20, 2014 ] Staff

Will this allow the upper LCD display to show the currently playing sing title information on my 2008 Escape hybrid. I see from Kelly's answer that it displays the time, and temp info but will the 2-line display on the upper screen show text/title info for currently playing track? Thanks.

[ LEO Jun 10, 2014 ]

2 answers

Yes...

[ TEENE A Jul 09, 2018 ]

My understanding is the head unit controls what is displayed, this just allows you to use the steering wheel controls to work with the aftermarket head unit/ stereo.

[ JAMES Jun 10, 2014 ]

Hi ... did you install the PAC RP4-FD11 in a 2010 Ford Fusion? I recently installed mine that I got from CrutchField. It works well and all SWC functions are fine. What I have question about is if your LED screen (my car is SE model) shows the clock anymore? I lost the clock display functionality, plus it always shows "DVD" in upper corner. Just wondering if this is typical behavior with other people. Thanks.

[ Eric Jan 16, 2014 ]

6 answers

Actually I ended up returning mine. In the end I could not justify the money and the cuts to the wireing harness for the stearing wheel controls. I can reach the stereo as easily as I can reach the steering wheel controls. I would not expect that to be normal behavior, since my understanding was that this would make your steering wheel controls work like a remote. Not that it would come in as a seperate line-in. This might be worth asking Crutchfield or anyone else running your stereo. On a side note, did you make the same mistake on the wiring so that your stereo does not dim with the interior lights? Ford uses a different wire than the harness shows. I need to go back in and make the change, but waiting until a nice warm day and that I feel up for it. Good Luck

[ JAMES Jan 17, 2014 ]

I was sent this question, but I'm sorry I can't offer any assistance. Mine was in an explorer that didn't have the screen. Put in your car, go to stereos, and click in the top bar. It has "important info" about you particular car. Should describe if that screen will or will not work with an aftermarket radio

[ Jason Jan 17, 2014 ]

I did have my head unit installed by a local shop this time. My 2012 Escape Limited has the LED screen on the upper center dash as well. Mine shows temperatures, outside temperature, direction and it reads "Audio" and in upper left it reads "DVD"

[ KELLY Jan 17, 2014 ]

I do not have the car anymore but if I remember right, it did knock out the clock function like you say.

[ EVAN Jan 17, 2014 ]

I have a 2007 ford explorer, have no problem......maybe wiring?

[ ERIC Jan 17, 2014 ]

I did some research prior to the install and found that some features stop working intermittently and that the clock feature from the screen does not work. I decided to not use install it because of the integration it requires. Since then I have sold the fusion and bought a new vehicle. Sorry I could be of more help with your issue. You could always try contacting a reputable car audio store. They should be able to help you without any fees.

[ NICHOLAS J Jan 17, 2014 ]

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PAC RP4-FD11 Wiring Interface

Connect a new car stereo and retain steering wheel controls, RAP, and factory amp in select 2005-up Ford, Lincoln, and Mercury vehicles

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