To see if this custom-fit item will work for you please tell us what vehicle you'll use it with.
Thank you! Your comment has been submitted successfully. You should be able to view your question/comment here within a few days.
Error submitting comment. Please try again momentarily.
Tired of spending hours installing wiring harnesses? The Curt 5th Wheel/Gooseneck Custom Wiring Harness is a game-changer, offering a simple, plug-and-play installation without any need for cutting or splicing wires. Simply plug into your truck's existing factory wiring, and you're good to go. This custom fit makes the set-up time fly by, so you can focus on hitting the road.
Whether you're towing a 5th-wheel or a gooseneck trailer, this harness meets your needs with its 7-way, blade-style connector. It offers easy connections for reverse lights, tail lights, brakes, battery charge, turn signals, and even the all-important ground wire. With this kind of versatility, you can tackle any towing task with ease and confidence.
Trucking with an aluminum bed? No worries—the included stainless steel bolts and rubber well nuts in the installation kit provide crucial isolation to prevent galvanic corrosion, ensuring that your truck bed stays corrosion-free. It's designed for aluminum truck beds, so you can enjoy a reliable connection without the risks associated with dissimilar metal contact.
Worried about the fit? Don’t be. With a generously long 7-foot harness, this wiring solution easily reaches from your truck's rear bumper to the bed. It’s the perfect length to accommodate most modern trucks, including those with extended beds, giving you room to position it exactly where you need for optimal hookups.
If you’re driving a recent model from Ford, including the F-150, F-250, or F-350, this kit is made to match. It integrates flawlessly with the factory tow package, maintaining your original 7-pole connector at the rear of the truck while adding convenience with another plug right in your truck bed. It's modern convenience blended seamlessly with factory style.
The package comes complete with everything you need for a smooth setup—zip-ties, bolts, and well nuts. No extra tools are necessary, making your installation straightforward and faster. It's all you need in one box, putting you on the road more swiftly, hassle-free.
California residents: click here
The installation video from etrailer.com was extremely helpful and provided exactly the information I needed to complete my turnover ball project. The wiring harness appears to be of high quality and has received strong recommendations from everyone I've consulted.
Great product. Was exactly what you needed to make a quick connection to the truck for connecting your fifth wheel . Nicely designed.
Works just like it should. Installed in about 15 minutes.
Installed this in my 2021 F-150 long bed. Was able to cut a hole right by my onboard outlet in the bed of my truck. Simple plug and play install. On occasion the connection isn't the best, but I think it would be better if I used some dielectric grease on the connectors.
Mitch B.
12/14/2023
Over a year with this and everything is working very well
Mike L.
12/14/2023
Great product and easy assembly.
PLUG AND PLAY install...only 1 hole needed to be cut for the install...everything else is plug in and go.
Only feedback I have is that one of the frame brackets where we had to press fit the bolt grommet was oversized and didn't retain the grommet. We worked around it to hold it in place until we could engage the bolt. Other than that we love the fit and finish and are very pleased.
Craig B.
12/21/2023
Wiring harness has worked great no complaints. Easy to install, no issues.
Work like a charm, easy to install instructions for great. Would definitely purchase again.
Excellent! Everything was delivered on time and in good shape.
Great product. Plug and play mostly. I would be willing to spend a few more bucks if they sold it with the hole saw bit and the grease as a package deal. The plug is very easy to install. It helps to lowered the spare tire down to make room to make the connection, then all you have to do is cut a hole in the inside of the box, route the cord and mouth the outlet.
Kyle
7/30/2023
Great, no problems. Used quite regularly.
Part was exactly what I ordered. Installing it was easy
First, what I like. This system was easy to install. The cable length was perfect. The connector system to splice into the stock connectors was perfect. The directions accurately detailed the hole-saw size needed to drill in the truck bed. The umbilical from my 5th wheel seats securely. The problem I have is the mounting screws. The screws are steel while the 2020 F250 bed is aluminum, meaning there is the possibility of corrosion with dissimilar metals. The connectors design solution is rubber grommets to isolate the steel from aluminum. With only a few plug/unplug cycles, the grommets failed, the connector came loose. I had to remove the mounting system and replace with steel bolts, using silicone caulk to provide corrosion protection. Bottom line, connector mounting system doesn’t work.
Fit and finish are excellent and work as expected. I would be cautious with measuring for the hole in the bed, depending on what if any bedliner is installed. In my 2018 F150 the factory spray in bedliner was thinner than the measurement in the instructions. This resulted in the hole being off center by 1/8". This is not a deal breaker, just something to be aware of, and is the responsibility of the installer. I Regularly pull a 9800 pound fifth wheel camper and gooseneck dump box with no issues.
Great product and even better customer support. The install videos are awesome I'm
Perfect ready to use,easy to install,thanks
This was a C57008 for a '18 F250 6' box. The item was delayed because of the new vehicle. But etrailer kept me well informed of the progress. The plug system was so convenient without having to splice the right wires and the 7' length was just long enough to locate the socket just ahead of the wheel well for my slide in camper. It also included a nifty isolation kit to avoid screwing directly to the aluminum bed.
Received the 7 way harness as promised. Used video that walked through the install and had no issues. Harness works as advertised. Great experience
ANY time I need something related to trailer parts or towing, etrailer is my source and suggestion for others
Lester
6/13/2022
Worked Great, very simple
Great price, simple installation with easy to follow instructions! I highly recommend this product!!!
Excellent service! Called in my order and received my order in just a couple of days. The Curt 7 pole connector for al beds was easy to install and works perfectly for my 5th wheel. Highly recommend etrailer!!!
etrailer does it again. One of my items was backordered and then it appeared to be further delayed. I called, spoke with Carol and told her that I needed the parts for the upcoming 3-day weekend. She told me that she would check with the warehouse and make sure they shipped that day. I received the parts unbelievably quickly and am installing them over the next few nights. I'll update the post to comment on the install and my impressions of the product but for now I'm completely blown away by etrailer's consistently outstanding customer service. Thanks Carol, thanks etrailer.
This harness is exactly what I needed for our new 5th wheel to get a plug close to the pin box but not lose the plug in the bumper. The quality is good and the install is simple. The only, very small, negative is the wire ties that are supplied with it are terrible, they all broke very easily. No problem, who doesn't have a supply of them already...
this was the easy and only way to install a gooseneck hitch assembly.
all worked as it should, and done in about 30 minutes, start to finish.
Do you have a question about this Custom Fit Vehicle Wiring?
Condition: Like New
Notes: May have damaged packaging or minor cosmetic blemishes.
Info for this part was:
At etrailer.com we provide the best information available about the products we sell. We take the quality of our information seriously so that you can get the right part the first time. Let us know if anything is missing or if you have any questions.
Victoria H.
4/3/2025
That's awesome! I'm happy to hear the installation videos came in handy for you Roman! Any upcoming adventures planned?