bing tracking image
  1. Trailer Wiring
  2. CURT
  3. Trailer Connectors
  4. Vehicle End Connector
  5. 4 Flat
  6. Plug and Lead
Curt Vehicle Wiring Harness with 4-Pole Flat Trailer Connector - 60" Wire Lead

Curt Vehicle Wiring Harness with 4-Pole Flat Trailer Connector - 60" Wire Lead

Item # C58044
lowest price pledge
Our Price: $7.70
You Save: 68%
Trailer Wiring

Will this fit?

To see if this custom-fit item will work for you please tell us what vehicle you'll use it with.

Orders above $99 qualify for Free Shipping
Shipping Weight: 0.27 lbs
In Stock
zoom in icon
slider vertical icon
zoom out icon
Comment field cannot be left empty.
Name field cannot be left empty.

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.

Product Images

In Use/Installed

Customer Photos

Need help with installation?
Locate installers near me
Wire your vehicle to tow a trailer with this universal, splice-in wiring kit. Includes 4-way flat connector, 60" of bonded wire and necessary installation hardware. Designed for use with 2-wire electrical systems. Lowest Prices for the best trailer wiring from CURT. Curt Vehicle Wiring Harness with 4-Pole Flat Trailer Connector - 60" Wire Lead part number C58044 can be ordered online at or call 1-800-940-8924 for expert service.
  • All Info
  • Reviews (102)
  • Q & A (0)
  • Videos (5)
  • Photos
  • Why etrailer?

CURT Trailer Wiring - C58044

  • Trailer Connectors
  • Vehicle End Connector
  • 4 Flat
  • Plug and Lead
  • 0 - 5 Feet Long
  • CURT

Wire your vehicle to tow a trailer with this universal, splice-in wiring kit. Includes 4-way flat connector, 60" of bonded wire and necessary installation hardware. Designed for use with 2-wire electrical systems.


  • 4-Way flat trailer connector at the back of your vehicle powers your trailer's signal lights
    • Compatible with 5-pole, 6-pole and 7-pole adapters (sold separately)
  • Rubber-molded connector and bonded wire provide maximum durability
  • Simple installation
    • Hardwires to existing wiring
    • Includes quick-splice connectors for easy splicing of wires


  • Application: vehicles with 2-wire lighting systems
  • Lead length: 60"
  • Wire gauge: 14
  • Wire configuration:
    • Yellow: left turn and brake lights
    • Green: right turn and brake lights
    • Brown: tail lights
    • White: ground
  • Limited 1-year warranty

58044 CURT 4-Wire Flat Car End Connector with 5' Bonded Wire

This Product Fits The Following Vehicles

California residents: click here

Video of Curt Vehicle Wiring Harness with 4-Pole Flat Trailer Connector - 60" Wire Lead

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

Video Transcript for Curt Wiring - Trailer Connectors - C58044 Review

Today we're going to review part number C58044. This is the Curt vehicle wiring harness with the 4-way flat trailer connector. This part does come with these quick splice connectors also. This a 4-way flat trailer connector at the back of your vehicle, this is the vehicle end. Powers your trailer's signal lights, it has a nice rubber molded connector and it uses a bonded wire to provide maximum durability. It is a very simple installation. As you can see right here on this end it has the pigtails.

Basically it's hard wired to your existing wiring. You just include these quick splice connectors for easy splicing of these wires. They do give you three of them for three wires, the white wire is a ground so that you do have to connect to a good clean ground. Again the application on this is for vehicles with the two wire lighting systems. The length of this wiring is 60 inches. The wire gauge that they use in them is 14 gauge and the configuration basically if you'll notice the green wire is the right turn and brake lights, the yellow is the left turn and brake lights, the brown is the tail lights and the white is the ground, which is the standard wire colors in a 4-way. That should do it for the review on part number C58044.

This is the Curt vehicle wiring harness with the 4-way flat trailer connector. .

Customer Reviews

Curt Vehicle Wiring Harness with 4-Pole Flat Trailer Connector - 60" Wire Lead - C58044

Average Customer Rating:  4.8 out of 5 stars   (102 Customer Reviews)

Wire your vehicle to tow a trailer with this universal, splice-in wiring kit. Includes 4-way flat connector, 60" of bonded wire and necessary installation hardware. Designed for use with 2-wire electrical systems.


Was nice to be able to print out the text of the installation video. Clear and concise.

Great, no issues. As good as the day I put it on.
Paul - 08/21/2022


Just what I needed. Splice taps went right in the trash though. Crimp caps are reliable.


Very easy to install, hardest part is putting the trunk liner back in place. Watch the YouTube video to get the correct wire colors.

1997 Pontiac Grand Prix

Wire harness works fine but had no instructions, not even a identifier for which color wire does what. No ring terminal included for the ground wire. I think an end cap should be included on the harness due to the fact that there is power at the plug end any time the vehicles lights are operating. I ordered connector cover 20112, fits well on this harness.

The 4 pole trailer connector part # C58044 is designed with a green wire, yellow wire, brown wire and white wire. The green wire wires into the right turn wire of the vehicles wiring harness. The yellow wires into the left turn signal of the vehicles wiring harness. The brown wire wires into the tail light signal. The white is the ground wire that needs to be grounded to a clean bare metal surface on the vehicle. A ring terminal that accepts 14 gauge wire such as part # DW05737-1 can be used to ground the white wire. If you would like an end cap on the 4 pole connector I recommend part # 20112 by tow ready to protect the end of the connector. I have also attached a wiring help article to assist with the installation.
-- Etrailer Expert Heather A - 09/10/2018


Ran this from the front of the 5th wheel and back so I could pull my other trailer. Another job well done...... Thanks

Harness is still like brand new. The cover cap keeps the contacts nice and clean when not in use. Would buy again anytime.
James - 03/24/2021

2004 Pontiac Grand Prix

Hitch delivered quickly. The packaging is excellent. The condition of the hitch is new. The fixing kit, bolts and nuts correspond to the hitch. The video on the site was of great help in installing the hitch. I would like to have a video on the site how to connect the wires, but it's not difficult for an electrician. Problems with the installation of hitches on the car did not arise.

This Curt 4 pole part C58044 is a hardwire installation. I have attached a video of the hardwire installation for part # 18252 on a 2003 Pontiac Grand Prix. It is a different part number but the same installation. Although, I do recommend part # 56076 custom fit plug and play wiring harness for this vehicle. The plug and play option is a much easier installation.
-- Etrailer Expert Heather A - 08/23/2018

1987 Jeep Wrangler

This is a standard flat connector for attaching to a trailer. I don't have it installed yet, but it looks like it will work perfectly. The cable is long enough to connect to both rear lights.

I finally got it installed. My 87 Jeep has had the wiring modified several times in its life so nothing was as it was supposed to be. I finally got all of the previous mistakes unwired, returned it to normal and then added the connection for the trailer. It was easy to install and worked perfectly. I like it and use it all the time.
Ken L - 10/24/2014


Had an embarrassing issue with one of the quick-splice connectors breaking - would recommend soldering all wires for longevity.


needed this to splice into an existing harness setup. works great. no problems


Will all I can say is it's a well-built good-looking product. It was very easy to install.And easy to wire it up.follow the instructions that you get am 71 years old and I did it All in 45 minutes.
When I was ordering this product customer service went out of their way to help me in any way they could.
I would recommend this company to anyone they are very pleasant people to do business with.and the shipping was right on time


This attached very easily to my tail light wires. When not towing, I just shut it up in my trunk, and when I need to pull, I open the trunk and pull them out. I was very skeptical when I got the kit and saw the instructions, but it worked!

2001 Ford F-250 and F-350 Super Duty

I have ordered many times through and have never been disappointed. Great service and ever good products. I wish you were in my home town.


I'll start by saying this arrived with my hitch in just a couple of days. It installed easily, as I have experience with wiring. It's high quality, and well made. I did not use the provided clamps that came with the wiring kit. I've found that splicing and soldering the connections with heat shrink tubing for protection is the best method.

2002 Dodge Neon

Looked like I would need more "stuff" to hook up my wiring harness.
However with the help of on line installation instructions.
Mission accomplished.


I have bought several items from etrailer for several years and I have never been disappointed, mislead, or had to return any of them. I have always found them to have several selections, thorough descriptions, competitive prices, and reasonable shipping charges. I live in a small town about an hours drive from any place adequately equipped for trailer needs. Internet shopping has solved this problem for me. Thank you etrailer.


Perfect for the application and reasonable price. I believe has spent some time considering which wiring kit is best for each vehicle.


I replaced the old wiring harness with this new one. Looks like a very good product.


Great product and at a great price, "etrailer" has now become my number 1 stop shop for all my trailer needs now. Due to speed and unbeatable price.

2012 Ford F-250 and F-350 Super Duty

Description of product should in bold letters describe that this is not for the trailer but instead for the vehicle. Product is of no use to me.

Thanks for posting that. I was wondering the same thing. I need the other end, for the trailer to tow with my truck.
-- comment by: Dan A - 08/28/2013

1991 Ford Van

Product worked okay, but the connectors didn't. They would not close and tap the main wires. I had to splice the wires in directly. Otherwise, It works.


Dealing with etrailer has been nothing but a joy to do business with. They have a great selection and very reasonably priced. Fast service and delivery. I wouln't hesitate to do business with them again. Looking at their products is like being a kid in a Candy Their products are first rate quality.


Easy install. Performs exactly as advertised. You will have to buy a special electrical kit to be able to hook up trailer lights.


Simple wiring to solve simple issue. Works well


Great product, superfast shipping....


Could not have installed any easier. Instructions were complete and simple.

Show More Reviews

See what our Experts say about this CURT Trailer Wiring

  • What is the Wire Gauge for Curt Vehicle Wiring Harness with 4-Pole Flat Trailer Connector 58044
    I spoke with my contact at Curt and he said that on wiring harness # C58044 the wires are all 14 gauge. So if you wanted to use different connectors other than the quick splice connectors that come with it, get some for 14 gauge wires.
    view full answer...
  • What Wire Should Be Used for the Running Light Circuit of a 2006 Buick Lacrosse for Trailer Wiring
    It sounds like you are trying to connect the running light circuit wire of the Curt Vehicle Wiring Harness # C58044 to your 2006 Buick LaCrosse. It would not matter which of the tail light wires you use for this installation. Both wires carry the same circuit.
    view full answer...
  • Will 4-Way of Curt Wiring Harness # C58044 Connect to 4-Way of Trailer with 5 Wires
    The 5-wires that are ran to your 4-way means that you have a wishbone 4-way. That means that the running light circuit has two wires ran for each side of the trailer. The Curt 4-way part # C58044 would work well with this. The running light circuit of this kit uses only one wire but will work fine attached a 4-way that has these circuits split out for both sides.
    view full answer...
  • Trouble Connecting the 4-Flat Trailer Wiring to the 4-Flat on My 2008 Ford F-250
    After viewing the photos that you sent me, I have a solution to your problem. It looks like the weather shielding around the 4-flat on the trailer was manufactured different then the standard 4-flat. I recommend cutting the old plug on the trailer of and wiring in Curt Wiring Harness with 4-Pole Flat Trailer Connector, # C58044. The Curt end is designed to fit the plug that is on your Ford. You could also try to trim back the weather shielding on the trailers plug to fit the one on your...
    view full answer...
  • Does Curt Trailer Wiring Harness part # C58044 Fit 2005 Ford Mustang
    Yes, we have confirmed with Curt that their universal style trailer wiring kit part # C58044 that you referenced is the correct fit for your 2005 Ford Mustang.
    view full answer...
  • Function Carried on Each Wire of 4-Pole Trailer Harness
    A 4-pole trailer wiring harness like # C58044 uses the brown wire to carry the running light signal for both sides of the trailer. The green wire carries right turn and brake signals and the yellow wire carries left turn and brake signals. The white wire is ground. You can see the arrangement for many popular types of trailer wiring by referring to the linked article.
    view full answer...
  • Connecting a Hitch Light to 4-Way on a 2015 Ford F-150 So it Doesn't Deactivate Blind Spot Detector
    The easiest way to connect your hitch light to your 2015 Ford F-150 without it deactivating the Blind Spot Detector would be to install an aftermarket 4-Pole Connector. All you need to do is use the Curt 4-Pole Trailer Connector, part # C58044, and splice into your F-150's lights directly behind the tail light housing. The wire configuration will be: Yellow - Left turn/brake Green - Right turn/brake Brown - Tail lights White - Ground This should bypass the sensors for your Blind Spot...
    view full answer...
  • Wiring Harness With Four Pole Flat Connector For A Massimo Warrior UTV
    They do not offer a specific wiring harness for a Massimo Warrior UTV however; you can add a universal wiring harness and splice the wires into your taillight wires. I recommend the Curt Vehicle Wiring Harness with 4-Pole Flat Trailer Connector - 60" Wire Lead Item # C58044.
    view full answer...
  • Recommended 4-Way Flat Connector For 2008 Toyota FJ Cruiser
    We do not have a 14 gauge trailer wiring harness for your 2008 Toyota FJ Cruiser. We do have 3 16 gauge options that are confirmed as a custom fit for your vehicle, and that gauge is the industry standard for most trailer connectors. I recommend the Tekonsha T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector # 118405. I've attached a video of this installation for you. If you want a 14 gauge wire, you can use the Curt Vehicle Wiring Harness with 4-Pole Flat Trailer Connector...
    view full answer...
  • 4-Pole Trailer Wiring Harness for 2004 Ford Ranger Edge Without Factory Tow Package
    If your 2004 Ford Ranger does not have the tow package wiring in place to allow use of a quick-connect harness you can instead use a hard-wire type harness in order to have a 4-pole connector. If you already have a circuit tester (to allow you to confirm the function on each wire) you can use Curt harness # C58044. If not I suggest the Draw-Tite kit # 18252 which includes a probe tester and the quick splice connectors you'll use to wire the harness into your vehicle. I have linked an...
    view full answer...
  • Trailer Wiring Harness for 2017 Cadillac XT5 Without Factory Towing Package
    From what I've been able to determine from my research, all of the 2017 Cadillac XT5 have the plug that is used to connect a trailer wiring harness, so the Tekonsha # 118720 should work for you. If for some reason the plug has been removed, you would need to hard-wire in a harness like the Curt # C58044, but this is extremely unlikely.
    view full answer...
  • Recommended Trailer Wiring Harness For A 2014 Ford F-150 XL Without Factory Towing Package
    As your 2014 Ford F-150 XL did not include the factory towing package, you will need to use a hardwire kit, like the Curt # C58044. There will not be a T style connector available, unfortunately. The Curt harness # C58044 will include quick splice connectors to make the wiring a lot easier though, and you will not actually need to cut any of the wires to get it installed.
    view full answer...
  • Recommended Trailer Hitch for Triple Towing with Camper
    The Adjustable Width Trailer Hitch Receiver part # 13703 is great for trailers as it works with all different frame types and widths. It has a 3,500 lb weight capacity with 350 lb tongue weight rating. It can be bolted or welded. This is our most popular trailer hitch for campers and RV's. You'll also want the Curt Vehicle Wiring Harness part # C58044.
    view full answer...
  • Can I Tow Two Trailers?
    There are several things to consider when it comes to double towing. First, make sure it is legal in the areas you will be driving. In the west and midwest it is gererally allowed. Most states on the eastern seaboard do not allow it. Even if it is allowed, there may be certain requirements and restrictions state to state. Next, the second trailer will need to be lightweight so as not to require brakes. Generally, if a trailer has brakes you should be using them. Next, you will need...
    view full answer...
  • Recommended Trailer Hitch and Wiring for a 5th Wheel Trailer
    The best trailer hitch we offer for a 5th wheel trailer is the Adjustable Width Trailer Hitch Receiver part # 13703 because it's very adjustable and rather easy to install. I have attached a sample install video for you for reference. In order to control the lights, you'll also need the Curt Vehicle Wiring Harness part # C58044.
    view full answer...
  • Can I Tow Another Trailer with ATVs Behind My Bumper Pulled Trailer
    Most states do allow you to tow a trailer behind a trailer as long as it does not exceed a certain overall length- I believe California has a limit of 65 feet total length of all 3 vehicles. You would need to consult with your State's laws and any other locales that you might be towing in to make sure that this is allowed there. You also may be limited by your trailer's ability to handle additional weight pulling at the back, so you'll want to check with the trailer manufacturer to determine...
    view full answer...
  • 4-Way Wiring Harness Recommendation for a 2004 Ford Expedition
    If your 2004 Ford Expedition has a factory 7-way installed on it the Curt Harness # C55384 that you referenced would work on your vehicle and would provide it with a 4-way. If you don't have a factory 7-way you would instead need the Curt harness # C58044.
    view full answer...
  • Can I Triple Tow With a 2018 Toyota Tundra SR5
    If the combined weight of your loaded travel trailer which is 7,500 lbs and your loaded utility trailer which 1,500 lbs for a total of 8,700 lbs is less than the towing capacity of your 2018 Toyota Tundra SR5 then yes, you can triple tow. If you do not already know the towing capacity of your Tundra there is a guide you can use on page 177 of your owner's manual. To use this guide you will need to know your model code which is found on the certification label inside the driver door jamb...
    view full answer...
  • Dust Curt 4-Pole Flat Vehicle Wiring Harness 58044 Come with Dust Cover
    The Curt 4-Pole Flat Vehicle Wiring Harness # C58044 does not come with a dust cover but you can easily add one with the Curt part # C58200.
    view full answer...
  • Plain 4-wire connector with 5-foot harness
    The Curt # C56175 is a trailer wiring harness that includes a powered converter that is used to handle the additional strain that can occur when powering trailer lights. The # C56175 is the confirmed fit trailer lighting harness for the 1998 Volkswagen Jetta. When a vehicle is connected to a trailer and the car is not specifically set-up for trailer towing from the factory, the powered convert will make sure that there will be enough power sent to the trailer to fully illuminate the trailer...
    view full answer...
  • Which 4-Way Wiring Harness Fits My 2004 Ford Expedition
    The Curt T-Connector Wiring Harness # C55384 is what provides your 2004 Ford Expedition with a 4-way connector by plugging directly into the 7-way harness that is included with the factory tow package. If you only have a 4-way that is hard wired into the Expedition then I recommend cutting off the existing defective plug and hardwiring a new one with the Curt Wiring Harness # C58044.
    view full answer...
  • Parts Needed to Add Wiring Harness to 1971 Cadiallac Eldorado
    It sounds like you might be trying to add a wiring harness to tow a trailer with your 1971 Cadillac Eldorado and there is not a custom harness for this vehicle, but you could use the Curt Vehicle Wiring Harness with 4-Pole Flat Trailer Connector - 60" Wire Lead # C58044 and hard wire one in. This would be the only available solution to accomplish this. I've linked an installation video of this that you can use as a rough guide during the process, as well as a helpful article we did on...
    view full answer...
  • Trailer Wiring Harness for a 2011 Chevy Equinox LS
    There are several wiring harnesses available for the 2011 Chevy Equinox but # C58044 will not fit. I have included a link to the harnesses that do fit. If your Equinox does not have the factory tow package the most popular option is # 56094. I have linked the instructions and a video showing a typical installation for you. If your Equinox does have the factory tow package you would use harness # 118264. I have linked a video and the instructions for this harness as well.
    view full answer...
  • Hard Wiring Universal Installation Kit ETBC7 To 1994 Ford Taurus Wagon
    Although it would be easier to install a 4-way harness like the Curt Custom Fit Vehicle Wiring,Wiring for the Ford Taurus, part # C58044, you can cut the 4-way harness off of the Universal Installation Kit, part # ETBC7 and hardwire the 7-way to your Ford Taurus car wiring if you choose. You will need to identify all of the wires on the vehicle by function to make certain you are hooking them to the correct wires on the 7-way harness of the ETBC7. The ETBC7 does come with a circuit tester....
    view full answer...

< Previous
123. . .4

Do you have a question about this Trailer Wiring?

  • Why

    At we guarantee:
  • Highest quality trailer wiring for the best price.

    Our Lowest Price Pledge ensures you will never overpay for the parts you need.
  • Real product know-how.

    We make sure that the products we sell are what we say they are, and that they work the way they are supposed to work. Get real advice from a real person who has the knowledge and expertise needed to solve your problem.
  • Most detailed, accurate trailer wiring information available.

    Because we take providing accurate product information seriously, we take our own detailed product photos, demo videos and installation videos, as well as verify measurements, instructions, and vehicle fit information.
  • Installations, made easy.

    We love helping people and have the most highly-trained customer service, hands-on experience, step by step videos and installation instructions.
  • Fast shipping.

    Your order is automatically routed to get out of our warehouse and to your door as quickly as possible. Receive free shipping on orders over $99.
  • Personalized service for life.

    We provide one-on-one, personalized service from the ordering process through the life of your product.
  • Trusted since 1946.

    We've been serving customers since our parts store first opened in 1946 and continue to be recognized by our customers, our vendors and third parties for exceptional service.
  • Returns Policy

    Need to return an item? No problem. Please read our Returns Policy for more information.

Info for this part was:

Employee Leah B
Edited by:
Leah B
Employee Lindsey S
Written by:
Lindsey S
Employee Michael H
Expert Research:
Michael H
Employee Jameson C
Expert Research:
Jameson C
Employee Adam R
Expert Research:
Adam R
Employee Sue W
Video Edited:
Sue W
Employee Wilson B
Updated by:
Wilson B
Employee Kristina F
Updated by:
Kristina F
Employee Isabelle B
Updated by:
Isabelle B

At 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.