Tow Ready 7-Way Wiring Harness for 2004 Ford F-150 with OEM 4-Flat Trailer Connector. Call 800-298-8924 to order Tow Ready Custom Fit Vehicle Wiring part number 118247 or order online at Free expert support on all Tow Ready products. Guaranteed Lowest Price and Fastest Shipping for Tow Package Vehicle Wiring Harness with 7-Way Trailer Connector. Custom Fit Vehicle Wiring reviews from real customers.
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Tow Package Vehicle Wiring Harness with 7-Way Trailer Connector

Tow Ready Custom Fit Vehicle Wiring

(26 reviews)

Code:   118247



Custom Fit Product

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Shipping Weight: 1.45 pounds


Tow Ready Custom Fit Vehicle Wiring - 118247

Tow Ready 7-Way Wiring Harness for 2004 Ford F-150 with OEM 4-Flat Trailer Connector.


  • Adds a 7-way to your vehicle while retaining your factory 4-flat
  • Installs in seconds on vehicles with factory 4-pole
  • Connects directly to standard OEM connector
  • Fuses and relays Included

NOTE: Mounting bracket part number PK12711U will work with this harness.

Product Detail

118247 Tow Package Vehicle Wiring Harness with 7-Way Trailer Connector

Video of Tow Package Vehicle Wiring Harness with 7-Way Trailer Connector

Videos are provided as a guide only. Refer to manufacturer
installation instructions and specs for complete information.

Video Transcript for Tow Ready Custom Fit Vehicle Wiring 118247 Review

Today we're going to review part number 118247. This is the tow-ready replacement OEM tow package vehicle wiring harness, with the 7-way trailer connector. This is a custom fit part number. It is designed to fit the 2004 Ford F-150 light duty trucks. Note it will not fit the F-150 Heritage model, because that is still the older design. This will replace your factory installed 4 pole connector.

It is an exact replacement for a damaged OEM wiring harness. It will install in seconds on vehicles with the factory 4 pole. It upgrades your vehicle from that 4 pole to the 7-way connector. This does connect directly to your standard OEM connector. Everything on the table is included. It comes with this wiring harness.

It comes with the 7-way. It comes with a couple of zip ties to take up any slack in any wires. Comes with the relay. It also comes with a nice set of instructions that are pretty detailed, and have some really nice pictures to show you where a lot of the locations are, to help you find them. Basically, when you go to install this, what you'll do is locate your vehicle's wiring harness plugs, which are located in the rear of the vehicle, usually underneath the vehicle and above the spare tire, and inside the driver's side train rail. Once you find that, you'll separate the vehicle's plugs. Basically, with these 2 plugs right here, you'll install this harness between those two plugs.

One will plug into one, one in the other. Then what you'll do is also locate, there's an existing ground stud. It's usually inside the driver's side frame rail, near the back bumper. Remove that ground stud. Take this white wire that already has the ring terminal on it.

You'll ground this wiring harness, the white wire, to that existing ground stud. Then you reattach that ground stud and tighten it down to get a good, clean ground. Basically, this will run to the rear of the vehicle. Then you can push in your 7-way, and have that at the rear of the vehicle. The one last thing you do need to do to get this operational, is you'll take this relay, and what you'll do is locate the vehicle's passenger compartment fuse panel in the vehicle cab, on the passenger side. It's usually behind the kick panel. There will be a cover there. What you'll do is open that cover, and you'll able to access the relays and fuses all in the box. What you'll do is go to your owner's manual, and it will tell you where to locate the trailer tow battery charge relay location. Then, you'll insert this included relay into that location. That will make you all ready to go. That should do it for the review on part number 118247. The tow-ready replacement OEM tow package vehicle wiring harness with the 7-way trailer connector. .

Customer Reviews

Tow Package Vehicle Wiring Harness with 7-Way Trailer Connector - 118247

Average Customer Rating:  4.6 out of 5 stars   (26 Customer Reviews)

Tow Ready 7-Way Wiring Harness for 2004 Ford F-150 with OEM 4-Flat Trailer Connector.

- 118247

by: Tony J.07/23/2014

I am very pleased with the wiring kit I had purchased from your company. The instruction were complete and the shipping couldn't have been quicker. The plug in harness fit my truck and was very easy to install. I have only one suggestion, and it is a minor one at that. The kit does not contain a mounting bracket for the vehicle plug itself, so a little time was spent fabricating one to mount the plug. Again this is a minor suggestion and will not keep me from visiting your website and/or making any purchases in the future. Thanks for a great product !!! Tony 142644


Still have the trailer product on my truck. Rebuilding a second trailer right now for bigger equipment.Thanks again, have a great day,

Tony J - 07/27/2015


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by: Jim S07/13/2015

The harness assembly works well and meets the performance described on the website. Unfortunately, the plastic housing that mates with the factory wiring on the truck didn't withstand the initial installation. The small barb molded into the housing that locks into the vehicle wiring snapped off during the first install. I had to add tape & heat shrink to the assembly to ensure that it wouldn't vibrate out during travel. Also the 7-way plug-in assembly doesn't fully lock into the wiring harness and has come loose 2x during travel. I've had great success with other etrailer products and will use them again. Hopefully, these parts will be improved. 211382

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by: Dave R.11/19/2014

Well I suppose if you are mounting the 7-pin to your bumper this is a 5-star product. The only reason I'm giving it 4-stars is because I wanted to mount the 7-pin in my truck bed for a 5th wheel (2004 Ford F-150). I knew when I purchased this item that the cabling for the 7-pin would not be long enough to do this. I had to cut this portion of the cable and extend all 7 wires about 2 feet, then re-wrap the cabling. Once this was done, it's a perfect product for in-bed mounting. One CAN purchase an extension for the 7-pin but it's $43 as I recall. I URGE etrailer to create this exact setup with a longer 7-pin for applications such as mine. I can't possibly be the only one doing this. Other than that, great product, great service, no issues at all. 161803

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by: Patrick M.12/10/2010

7 way tow harness 118247 What a great experience dealing with Etrailer on this purchase. The actual transaction went smoothly and follow up communication from Etrailer staff was exceptional. I was immediately informed of receipt of my order, when my package was shipped, and receive a follow up message within hours of it's delivery. Their staff deserves a A+ for this transaction and I'll be back when and if I need something else. 3920

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by: Ron S. Quesenberry07/21/2015

This is exactly what I needed and couldn't find it any where in my local area, not even at a trailer dealer. The product was very easy to install and worked as expected without complications of any kind. I love the product and was glad that it's what was needed to make the transition. The web site video provided adequate information pertaining to the product and how to install it with ease. Thank You! 213399

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by: San Antonio Tim03/05/2014

I looked and asked around everywhere for a seven pin plug. People wanted to charge me a couple hundred bucks to install it. I saw this video on youtube and went to the website and ordered it on the spot. Easy to install. Took five minutes. I wish it would have came with mounting bracket, but other than that, AWESOME!!!!! Definitely recomend this sight! 118598

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by: mike k03/27/2012

The product I bought through your company was very good products, everything work as they describe it and easy installation as they said it would be.even after the sale they still continued to help us. I would recommend this company to other people and will order again from this company. Excellent job!!!! 35267

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by: Mike K05/17/2013

I installed the items I orderd on a 2004 Ford F150 without factory trailer package. The items suggested to buy fit perfect and work perfect. They were easy to install considering the truck is 8 years old. Some rust to deal with. I would give two thumbs up. 80791

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by: Dave S.02/21/2012

The product was very easy to install and works great! It was easy to find on, shipped the same day and made it to me faster than I expected after my free shipping upgrade. Thanks and I will use you again in the future! 32064

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by: Curt B.05/28/2015

It really took less than five minutes to install. It took longer to lower and raise the spare tire than to click the wires into place. I really recommend lowering the spare tire, you'll have more room to reach up to the frame. 198433

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by: Scott L.07/08/2013

I have not installed the product yet. The wiring harness , connectors and instructions seem to make the brake wiring job I need to do very easy. It will turn a difficult job into a easier project than I thought. 88397

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by: Jon H.11/05/2009

Fast and easy install Quick and easy install. Instructions are spot-on. Doesn't quite fit mounting bracket 18138 without drilling new mounting holes wider apart. 2532

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by: Robert S.11/29/2012

The wiring harness was shipped withing 24 hours of placing order. Product was exactly as described, high quality, great price. 60202

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by: Shawn03/15/2013

The adapter was prefect, the bracket on the other hand was about 1 1/2 inches to short. It would not clear the bumper. 70996

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by: Victor W.06/13/2015

Very pleased. Called Customer service and they helped me install the product, and they were very helpful and courteous. 203159

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by: KW10/08/2012

Products worked exactly as described. Shipment went out the door in less than 24 hours and arrived two days later! 56737

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by: Rob T.06/27/2011

Wiring harness worked as advertised. Great way to update from factory 4 pin to a seven pin. Quick and easy. 18009

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by: kerry06/21/2014

wiring was exact fit but the brackets you have to buy to mount it none of the holes line up!!!!! 136915

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by: Mark02/28/2013

This product is great. I had it open and on in 10minutes. Very simple and easy to install 68102

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by: Sacha P.06/24/2014

Excellent product, good prices and fast shipping/delivery. A+ Highly Recommended. 137353

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by: Alg06/02/2015

It was exactly what I needed. No problem installing it. Everything works great! 199847

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by: John W04/25/2014

This harness worked great.It was easy to install and it was shipped out fast. 127355

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by: Brian S02/11/2015

It was a perfect fit and had good instructions. Videos are very good also. 173317

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by: Mark S.05/27/2014

Fit my 2004 ford f150 as told!! No problems. Thank you Rebecca N. 132589

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by: Tim G.03/03/2014

Great product that was very easy to use. Just plug and play! 118327

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by: jerry c.05/07/2015

so far so good, just like oem 191225


Ask the Experts about this Tow Ready Custom Fit Vehicle Wiring
Do you have a question about this Custom Fit Vehicle Wiring?

  • How to Add a 7-Way Trailer Connector on a 2008 Ford F-150
  • What you will need in order to convert your 4 pin connector to a 7 pin connector on your 2008 Ford F-150 is Adapter 4 Pole to 7 Pole and 4 Pole part # 37185. This adapter will allow you to use a 7 pin trailer connector and have the option to use a 4 pin if you needed to. All you would have to do is connect your vehicles 4 pin connector to the 4 pin connector from the back of the 4 Pole to 7 Pole Adapter part # 37185 then ground the white wire from the adapter if you do not need the additional...
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  • Upgrading 2004 F150 with Factory 4-Pole to 7-way and Brake Controller
  • The Tow Package Vehicle Wiring Harness with 7-Way Trailer Connector, part number, # 118247, will plug inline with your existing wiring harness and provide you with the necessary wiring and 7-way connector to install a brake controller. The fuses and relays needed to install the harness are included to make the necessary brake and auxiliary power functions functional. You can retain the 4-way trailer connector and plug the new harness inline with it or remove the 4-way harness if it is...
    view full answer...

  • Trailer Connector for 2004 Ford F150 with no Tow Package
  • Although not all 2004 F150 models were equipped with the 4-pole connector, the Tow Package wiring harness you referenced, part # 118247 will still work with those with no trailer connector. The connector that the harness plugs into is located under the vehicle, along the drivers side frame rail behind the back bumper. To see the install instructions, click on the provided link.
    view full answer...

  • Replacement Trailer Wiring Harness for a 2004 Ford F-150 new Body Style
  • Yes, the Tow Randy replacement vehicle wiring harness # 118247 is the correct harness for a 2004 Ford F-150 new body style. I have included a link to the installation instructions for you to view. You may also need a mounting bracket like # PK12711U.
    view full answer...

  • Wiring Harness For a 2004 Ford F-150 New Body Without Factory Tow Package
  • For your 2004 Ford F-150 new body, I would recommend using the Tow Ready Custom Fit Wiring Harness, # 118247. This wiring harness will plug into a connector that is located along the drivers side frame rail behind the back bumper and does not require any splicing. I have attached the installation instructions that show where the vehicle side connector is located and where to connect the relay. I have also added a photo showing the location of the vehicle side connector For a smooth...
    view full answer...

  • Options for Installing 7-Way Trailer Connector on 2004 Ford F150 Equipped with 4-Pole
  • Although the # 30717 will work, I have a better suggestion for you. If your F150 is the New Body style, use part # 118247. If you have the Old Body style, use # 118242. Either connector will plug inline with your existing trailer connector, allowing you to retain the function of your existing 4-pole. Either kit includes the necessary fuses and relays to activate the remainder of the tow package circuits. Granted, this is a more expensive option, but it will be a very quick and easy plug-and-play...
    view full answer...

  • Installing a Trailer Brake Controller on a 2006 Ford F-150 with Factory 4-Way Flat Trailer Connector
  • If you just want to run the lighting functions on the trailer, you can just use an adapter like Adapter 4 Pole to 7 Pole and 4 Pole, # 37185. Plug in your 4-Way flat to the back and tape up the rest of the wires with the exception of the white ground wire (attaches to the vehicle frame). But I recommend wiring the truck with a 7-Way and a brake controller so you can use the electric brakes on the trailer using # ETBC7. For a brake controller, I recommend the Tekonsha Prodigy P2, # 90885....
    view full answer...

  • Parts Needed to Install a Brake Controller on a 2012 Ford F-150
  • If you have a factory 7-way all you will need to install a Tekonsha brake controller would be a Tow Ready Plug-In Wiring Adapter # 22292 that you referenced. If you have a 4-way you will also need a Tow Package Vehicle Wiring Harness # 118247. This product comes with all the fuses and relays that you would need to activate the 7-way also. The truck computer should not have to be updated either for one of our controllers to work on your vehicle. If you are looking for a brake controller...
    view full answer...

  • Will The Tow Package Vehicle Wiring Harness with 7-Way Trailer Connector Fit My 2005 Ford F-150
  • The Tow Package Vehicle Wiring Harness with 7-Way Trailer Connector for the 2004 F-150, item # 118247, will not work on the 2005 model year Ford F-150. There was a were changes for the 2005 model year and the wiring package was changed on the Ford Trucks. To wire your vehicle for a 7-way connector you will need a 4-way connector first. If your truck has a factory 4- way connector then you will be able to use our Adapter 4 Pole to 7 Pole and 4 Pole, item # 37185, and splice into the vehicle...
    view full answer...

  • Recommended Wiring Harness for 2009 Honda CR-V
  • We offer the Tow Ready T-1 Harness, part # 118247 for your CR-V. This part is similar to the Curt T Adapter. If your trailer has standard lighting drawing no more than 9.2 amps, the T-1 harness will work just fine for you. When you start adding side marker lights or clearance lights that add up to exceed that 9.2 amp figure, then you will want to go with a hardwired modulite converter like part # 119190KIT. The modulite wires directly into the tail light circuits as well as drawing its...
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  • Will Tow Package Vehicle Wiring Harness 118247 Work on a 2005 Ford F-150 XL?
  • Unfortunately, the part number you mention will not work with the 2005 F150. You'll have to use the 4 Pole to 7 Pole Adapter. Plug the existing 4-way into the adapter and attach the blue, black, and purple wires to the wires going into the connector on the driver's side frame rail. We have a Ford truck installation guide that shows how this is accomplished. I'll include a link below.
    view full answer...

  • Converting a 4-way to a 7-way on a 2005 Ford F-150
  • You are correct, the wiring you found on your 2005 Ford F-150 is as you suspected. The blue wire is for the brake controller output and the orange wire is the auxiliary 12 volt power supply. You could use the 12 volt aux as a circuit to maintain the charge on your trailer or basically run anything else that runs on a 12 volt system such as lights. Check out the FAQ and picture I attached also. For a 7-way I would recommend you get something like a Adapter 4 Pole to 7 Pole Vehicle...
    view full answer...

  • Troubleshooting Trailer Brake Controller Reading No Trailer Connected with a Trailer Connected
  • My first instinct is that there is a ground problem on the trailer side. Even if a new trailer plug was installed, if it was connected to the same wiring the ground could still be faulty. I would double check that connection. On a trailer, the ground should be attached to a non-painted, clean and corrosion free bare metal surface. Make sure that the ground wire is not damaged from the connector to where it is attached to the frame. Since you have not had a problem until recently and...
    view full answer...

  • Adding a 7-Way Trailer Connector to a 2010 Ford F-150 with Factory 4-Way
  • To add a 7-Way trailer connector to your 2010 Ford F-150 with a factory 4-Way you will need # 37185. This is a partial hardwire installation but on your truck it will be easy. I have linked a video that should help. Go to about the 10 minute, 50 second mark and forward to see the process of accessing the additional wires to make the 7-Way fully functional.
    view full answer...

  • How to Wire a 7-Way connector on New and Old Body Style 2004 Ford F-150
  • The way to tell if your truck is a new body style or a heritage model (old body style) is to check for the wiring harness at the rear of the vehicle on the driver side frame rail. you may have to lower the spare tire to see the harness if it is present. If your truck is the New body style then you will need the Tow Package Vehicle Wiring Harness with 7-Way Trailer Connector, part number 118247, to wire a 7-way connector on your pickup. You will be able to find the wiring harness on the...
    view full answer...

  • How To Upgrade From a Factory 4-Way Connector To 7-Way Connector on 2004 Ford Expedition
  • To upgrade the trailer connector on the rear of your 2004 Ford Expedition from a 4-Way to a 7-Way you will need to use the Hopkins Adapter, part # 37185. This adapter will plug into the existing factory 4-Way on your vehicle. After plugging in your 4-Way to the back of the # 37185 adapter the four remaining wires on the adapter will need to be hardwired to the corresponding circuits on the vehicle. The white (ground) wire will need to be attached to the vehicle frame, the black (12...
    view full answer...

  • Brake Controller and 7-Way Wiring Harness Recommendations for a 2006 Ford F-150
  • I do have all the parts you will need to install a brake controller on your 2006 Ford F-150. First, for a brake controller, I recommend the Tekonsha P2, # 90885 because it is easy to set up and easy to use. The correct wiring harness to go from the brake controller to the truck is # 3035-P. I have included some informational links on the controller and wiring harness for you to view. To add a 7-Way to the 4-Way already on the truck, you will need # 37185. I have included links to...
    view full answer...

  • Components Needed To Install Brake Controller On 2008 Ford F-150 With 4-Way Harness
  • Installing a brake controller like part # 90195 on your 2008 Ford F-150 that has a 4-way connector installed requires a couple of things. Along with the controller you can use the brake controller harness, part # 3035-P. Simply plug one end into the back of the brake controller and the other end into the built-in harness beneath your vehicle's dash. The # 118247 harness is not designed to work with you 2008 Ford F-150. This is designed to fit 2004 F-150 only. What you will need in...
    view full answer...

  • P2 Brake Controller and 7-Way Recommendation for a 2004 Ford F-150 with factory 4-Way
  • Everything you picked out is exactly what you need for a plug in play install of a 7-way and brake controller on your 2004 Ford F-150 that has a factory 4 pole. It sounds like you already watched the install video for the # 118247, but I attached this also. The 7-way of the # 118247 is the blade style 7-way also. I attached install videos and installation instructions for these products for you to check out also.
    view full answer...

  • Parts Needed to Add a 7-Way Trailer Connector to a 2006 Ford Expedition with Factory Tow Package
  • For your 2006 Ford Expedition, the correct 7-Way is # 37185. What I recommend though is to use # ETBC7. This kit comes with the 7-Way but it also comes with all the wiring and accessories you will need to wire it in and make it functional. For a brake controller, I recommend the Tekonsha P2, # 90885. This is one of our most popular controllers because it is easy to set up and easy to use. I have included a link to the installation details for you. I have also included links to an FAQ...
    view full answer...

  • Hidden Hitch Recommendation for a 2004 Ford F-150
  • For your 2004 Ford F-150 I would recommend you get a Hidden Hitch Trailer Hitch # 87195. This hitch should work well on your vehicle. I attached installation instruction and an installation video for this product for you to check out also. To complete your towing setup you may also be interested in purchasing the following the products: etrailer Ball Mounts # EBMK4 Tow Ready Custom Fit Vehicle Wiring # 118247 (installation instructions attached)
    view full answer...

  • Which Mounting Bracket Will work With the Tow Package Wiring Harness with 7-Way on a 2004 Ford F-150
  • I went out to the warehouse an checked to be absolutely sure and the mounting bracket you will need is the Mounting Bracket for Pollak 7-Pole, RV-Style Trailer Connector - Vehicle End, item # PK12711U. You may also want to consider the No-Drill Mount Bracket, Short, item # 18140, for a no drill installation, which also checked to be sure it works with the Pollak bracket.
    view full answer...

  • Wiring Brake Controller on 2004 Ford F150
  • For a 2004 Ford F150, you would need the # 3035P Brake Controller Wiring Adapter that you referenced. The larger end of the connector would plug in under the dash, and the other end would connect to the Prodigy P2 that you mentioned. The 4-pole flat or 7-way refers to the trailer connector on the bumper of the truck. A trailer that is equipped with electric brakes typically uses a 6 or a 7-way trailer connector. If your truck already has the 7-way, all you should need to do is install...
    view full answer...

  • How To Wire Brake Controller on 2004 Ford F-150
  • If you have a factory tow package that includes a 7 way connector at the rear, then there will be a port underneath the dash for a brake controller harness. It should be near the large trapezoid shape OBDII port under the steering column. If you do have the factory tow package, you will need the harness that will fit your truck and the brake controller. If you have one of the newer Tekonsha brake controllers like the Prodigy or the P-3, you would use harness part # 3035-P. If you have...
    view full answer...

  • Trailer Connectors for 2002 Ford F250 and 2004 F550 Cab and Chassis
  • The Tow Ready wiring harness you mentioned, part # 118247 is a fit for 2004 F150 models only, and wouldn't work on your 2002 F250 or the 2004 F550. The correct connector will depend on how your trucks are currently configured. If you are looking to replace the existing 7-way connectors on each vehicle, the Tow Ready # 20119 is the correct replacement. The trailer connector would plug into the round US car connector socket located on your drivers side frame rail. The vast majority...
    view full answer...

  • Necessary Parts and Instructions To Install Brake Controller on 2010 Ford F-150 With Factory 4-Way
  • To install a brake controller on your 2010 Ford F-150, you will need to install a 7-way connector at the rear of your vehicle as you stated, and you will need to use a vehicle specific brake control wiring adapter to plug in under the dash. I will help you through the process, its not too bad of an install on your 2010 Ford F-150. To begin, you will want to start at the rear of the vehicle, here you will need to install Adapter 4 Pole to 7 Pole, part # 37185, which will give you a 7-way...
    view full answer...

  • Brake Controller Recommendation and Install for a 2004 Ford F-150
  • From the pictures you submitted it looks like you bought a 7-way adapter and an isolation solenoid to install your Prodigy P2 # 90885. The solenoid is not something we normally recommend for people unless they need the 12 volt power circuit of the 7-way to turn off when the vehicle engine turns off. All you would have needed to install the brake controller in your 2004 Ford F-150 is the part # 3035-P. If you only happen to have a 4-way trailer wiring harness you would also need the...
    view full answer...

  • Brake Controller Wiring Harness for 2006 Ford F-150 and Primus IQ Brake Controller
  • For a 2006 Ford F-150 and Primus brake controller you will need wiring harness # 3035-P. I have included a link to a video showing where to plug in the brake controller on your truck.
    view full answer...

Do you have a question about this Custom Fit Vehicle Wiring?

Info for this part was:

Test Fit:
Joe V

Expert Research:
Michael L

Video by:
Andrew K

Expert Research:
Robert G

Expert Research:
Patrick B

Expert Research:
Michael H

Expert Research:
Jeff D

Expert Research:
Reno H

Expert Research:
Jameson C

Video Edited:
Joshua S

Expert Research:
John H

Expert Research:
Adam R

Updated by:
Laura H

Expert Research:
Jeffrey L

Photos by:
Zach O

Updated by:
Sarah W

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