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Custom Fit Vehicle Wiring

Tow Package Vehicle Wiring Harness with 7-Way Trailer Connector

Tow Ready Custom Fit Vehicle Wiring

ratingratingratingratingrating (13 reviews)

Code:   118247



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Tow Ready Custom Fit Vehicle Wiring - 118247

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


  • Replaces factory installed 4-Pole connector
  • Exact Replacement for Damaged OEM Wiring Harness
  • Installs in seconds on vehicles with factory 4-pole
  • Upgrades Vehicles From 4-Flat OEM Wiring to 7-Way Connectors
  • Connects Directly to Standard OEM Connector
  • Fuses and Relays Included
  • NOTE: Mounting bracket part number PK12711U will work with this harness

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 install trailer wiring 2004 ford f150 118247
Trailer Wiring Harness Installation - 2004 Ford F-150

Video Transcript for Trailer Wiring Harness Installation - 2004 Ford F-150

All right. Today on this 2004 Ford F150 were going to install part number 118247. First thing we need to do is go ahead and unload our spare tire and get it out of our way. This way we have access to the wiring connection we need. Now, the wiring connection were looking for is going to be on the drivers side frame rail pointed out here, and well go ahead and disconnect it. Well push down on the tab and pull it apart.

Next, we need to remove the ground screw. Well go ahead and remove it. Now we can go ahead and start installing the new part. Now the wire harness is shaped like a T so well take both halves of the T and install them into the wire harness; one on each side. Well push them together until they click.

All right, now well take our white wire at the ring terminal and add that to the original wire with the ring terminal and bolt those two back together to the frame using the ground screw. Now we need to install a seven pole connector. Now, this kit does not come with any brackets to hold the seven pole in place. So, were going to add a couple of part numbers. Were going to use part number pk12711u to hold our seven pole bracket.

Were going to use part number 18136 to mount the whole assembly to the hitch. Well start off by putting the two brackets together. Now, were going to intentionally take one bracket and install it in reverse fashion that way we keep the seven pole connector as close to the hitch as possible. Well bolt these two together and then well take that assembly and well go ahead and clamp it to the hitch. Well take the band clamp, run it around the hitch and through the bracket and then tighten it down.

Well make sure its level first and then well tighten it down for good. Now well go ahead and take our wire harness and run it through the bracket. Well remove the little gray lock thats on top then install the seven pole connector. It also just snaps together. And, then well reinstall the lock. And, then our seven pole connector will get bolted to the seven pole bracket. All right. Were done with the back of the vehicle. Now we need to add a relay to the front. Well go to the passenger side front seat and there will be a kick panel down below that we have to remove to get access to the fuse panel. Well remove the door and then remove the lid to the panel. Then well go ahead and add our relay that comes with the kit. This will power our 12 volt power supply with our hot lead going out back at the seven pole connector. Now, you want to check your owners manual for proper location of this circuit, and then reinstall the covers. That will finish it for our install of part number 118247 on our 2004 Ford F150.

This Product Fits The Following Vehicles

2004 - 2004 Ford F-150 New Body Style

2004 - 2004 Ford F-150 New Body Style, with Tommy Gate lift

2004 - 2004 Ford F-150 with factory 4-Flat

2004 - 2004 Ford F-150 with factory 4-flat connector

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Customer Reviews

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

Average Customer Rating:  ratingratingratingratingrating4.8 out of 5 stars   (13 Customer Reviews)

- 118247

ratingratingratingratingrating by: San Antonio Tim03/05/2014

Is this review helpful?

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

- 118247

ratingratingratingratingrating by: Scott L.07/08/2013

Is this review helpful?

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

- 118247

ratingratingratingratingrating by: Mike K05/17/2013

Is this review helpful?

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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ratingratingratingratingrating by: mike k03/27/2012

Is this review helpful?

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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ratingratingratingratingrating by: Dave S.02/21/2012

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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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ratingratingratingratingrating by: Patrick M.12/10/2010

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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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ratingratingratingratingrating by: Tim G.03/03/2014

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

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ratingratingratingratingrating by: Shawn03/15/2013

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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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ratingratingratingratingrating by: Mark02/28/2013

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

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ratingratingratingratingrating by: Robert S.11/29/2012

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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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ratingratingratingratingrating by: KW10/08/2012

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

- 118247

ratingratingratingratingrating by: Rob T.06/27/2011

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

- 118247

ratingratingratingratingrating by: Jon H.11/05/2009

Is this review helpful?

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

Ask the Experts about this Tow Ready Custom Fit Vehicle Wiring
Expert Answers about Tow Package Vehicle Wiring Harness with 7-Way Trailer Connector - 118247                                            Do you have a question about this Custom Fit Vehicle Wiring?

  • 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...

  • 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 no longer n
    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 driver
    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 wi
    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...

  • 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
    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 conne
    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 it seems
    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, # 90885-3035
    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...

  • 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 article
    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 volt p
    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...

  • 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 an FAQ ar
    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 End Tr
    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...

  • 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 of 2002 F
    view full answer...

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

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