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This harness is built for trucks that already have a factory tow package connection. It plugs right into the existing ports on the frame rail, so there’s no need to cut or splice wires. The 7-way trailer connector is ready to go once it’s snapped in, making it a clean and simple upgrade for towing setups.
The kit comes with the necessary fuses and relays to power key trailer functions like electric brakes, battery charge, and reverse lights. Once installed, it provides a full 7-way connection with all the standard circuits active—running lights, turn signals, brake lights, ground, 12-volt power, brake output, and backup signal.
If your truck already has a working 4-way flat, this harness doesn’t take that away—you can keep using it for simpler trailers. The setup supports both connectors so you can tow a variety of trailers without switching wiring each time.
Whether you’re adding a proportional or time-delay brake controller, this harness gives you the necessary 7-way to tie everything together. It pairs easily with plug-in controller harnesses that connect under the dash, so adding brake control is quick and tidy.
The 7-blade connector gives you a tight, weather-resistant connection that stands up to repeated plugging and unplugging. It’s designed for factory-level durability, protecting your trailer wiring from corrosion and keeping power delivery consistent trip after trip.
Customer Satisfaction Score:
92% were satisfied with this product
8% of customers were not satisfied
Ratings & Reviews
f150 four stars because; The installation was complicated by the instructions They stated look at your owner's manual for the location of fuse and relays, The problem was the location is NOT listed in the owner's manual. Two day later I found the location. A picture in the instruction sheet for this year would help.
Service was good the part was plug and play just like they said .
easy install ,great quality
I wish I knew that there was an issue with Ford 150 wiring harnesses. The wire under the electrical distribution box (under the hood, driver side) to the trailer running lights relay apparently gets pinched and over time shorts out. I was able to repair the short and get my trailer lights back in service. Thanks to the Ford 150 forum for helping me find this issue.
Just received my order and installed over the weekend, everything went together like the videos showed and still waiting to put it all to good use. Jean at etrailers helped me with the questions I had and made things a little simple to decide which brake controller to get. She was a great help and I'm sure all off the employees are at etrailer. Thanks Jean
The pigtail matched perfectly with my oem wiring (2001 F150) and hookup was a breeze! Great product, good price and etrailer always knocks it out of the park with shipping service, well done!
Sorry for delay in the review.
The wiring harness worked great, I had to do some playing with it due to the wiring issues with my old truck, but it worked as expected and perfect. I had to leave my old factory harness in place for this to work, as it has the factory 7 way, but I made it work. Thanks for the professional advice and help selecting the product.
Everything I needed came in the box from etrailer and all I did was plug it up. It’s been working without any problems since I installed it a year ago. Awesome well built 7 way plug!
I HAVE RECIEVED AND INSTALLED THE TRAILER BRAKE /WIRE HARNESS AND THE 7 PIN TRAILER LIGHT ASSEMBLY AND ALL IS WORKING PERFECT. VERY EASY TO UNDERSTAND INSTRUCTIONS AND INSTALLATION. THANK YOU VERY MUCH.!!!
The Curt T-Connector to add 7-way trailer connector to my truck installed quick and easy, and work just like expected. It would have been helpful if this product would have provided a bracket for mounting the connector.
Product received quicker than anticipated. Installation was simple and was able to remove all the previous owners messed up wiring and once the new part was installed everything worked perfectly.
Now when I connect my trailers up all the winches / lights work as expected.
The instructions were simple to understand and follow.
I book marked this site and will use again and also tell my friends.
Thanks etrailer
Easy to install (video helped); product well-built and seems like it will last a long time; If I had to suggest any improvement it would be to increase the size of the mounting screws; they are a little small to handle the push/pull forces of the plug/unplug operation. Otherwise, this is a perfect product for the application. NO wire splicing required!
Thanks etrailer for your website. I had no clue what I needed for my recently purchased travel trailer. After a little research on your website and the great videos on the subject I found exactly what I needed to hook up the trailer brakes to my truck. Easy install and price was good. I am now looking to purchase tires to replace the ones on my camper. I will be sending another order soon. Thanks again etrailer!
the harness i bought was a perfect fit and has been working as it is supposed to i was also happy with with the way i was treated and the time they took to answer all of my questions as i write this i am getting ready to order new tires and maybe wheels
Easy to install, works great, allowing use of new boat with surge brake. Original 4 pin connector did not have back up light, this connector did not require tapping into reverse wire.
worked like a charm tested the lights and all worked perfectly.
same part from local Ford Dealer was 3 times the price.
Daveb
3/25/2015
Great product one year old still works like a charm
Thank you Adam for reaching out to me. Yes I am very happy with Curt T-connector and wiring harness. Along with the Curt tow hitch and break controller we purchased from etrailer everything is functioning as it should. Very very pleased we the service and products we purchased through. Thanks again for all your assistance.
My 99 F-150 had both factory and after market harnesses installed. I was confused on what to order but took a chance with this one. It installed perfectly and worked perfectly. My original 7way had been cut off and the aftermarket had went bad due to corrosion.
Ken
6/12/2014
Still working great. Thanks.
Very easy to install. Worked great until I traded in the truck 6 months later. I had an initial problem with the running lights but traced it down to a known but hard to find issue with the wire being pinched and shorted out at the wiring harness just outside of the fuse box on the left front wheel well. I am considering a motor home and will need a harness to connect my towed vehicle lights. I will definitely call for quote at that time. I will also need the front adapters to connect a 2001 VW Jetta to a Roadmaster tow bar.
Thanks for a great product and great service
Ken B
This is a very easy wiring harness to install , now my trailer brakes work . Would definitely recommend , well worth the money.
Fast and informative response from customer service (Sheila C) Order shipped and received promptly. Easy plug into existing wiring, no cutting into exsisting wiring. Only negative would be the bracket for 7 way outlet not included, needs to be ordered separately. Would have been a fifteen minute job but I made my own bracket.
Jgm
10/2/2018
Product still working as expected. No issues.
Installation on my 2002 Ford F150 was plug and play. Worked perfectly to replace the discontinued wiring harness that had shorted out.
The whole process of ordering in the expedited shipment was above expectations. The product is well-made easy to install.
Plug and play. What more can I say? It was a huge relief etrailer had a product in stock to prevent cutting my factory harness.
Nicholas
11/15/2020
Awesome no issues after a year
The videos made deciding what I needed for 2 different vehicles. Also easy installation with help from videos. Customer service was A+++++. Products were of high quality. Recieved products in a timely manner. Overall experience was very good. Will purchase from them in the future.
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Scott O.
10/27/2020
Still works great ??