Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector
(105 reviews)
Price: $106.39
In Stock
Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector
Item # C42WR
Retail:$117.95
Our Price: $106.39
You Save: $11.56
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- Reviews (105)
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CURT Custom Fit Vehicle Wiring - C42WR
- Custom Fit
- 4 Flat
- Trailer Hitch Wiring
- CURT
Quickly and easily install a 4-way trailer connector on your vehicle with this custom harness. T-connector plugs directly into existing wiring. Powered converter reduces strain on wiring system and is made using SMT to ensure superior performance.
Features:
- Provides a 4-way flat trailer connector at the back of your vehicle to power your trailer's signal lights
- Compatible with 5-pole, 6-pole and 7-pole adapters (sold separately)
- Connects quickly and easily
- Locate connection points behind tail lights
- Plug in T-connector
- Run hot lead to car battery
- Includes a tail light converter to ensure that your vehicle's wiring matches that of your trailer
- Powered module connects directly to battery to avoid overloading vehicle's electrical system
- Constructed using surface-mount technology (SMT) for consistent, reliable performance
- Maximizes trailer light yield and intensity while producing minimal heat
- Ensures superior operation in rough road conditions
- Comes with dust cap for 4-way flat connector
Specs:
- Maximum amperage:
- Stop/turn lights: 3 amps per circuit
- Tail lights: 6 amps per circuit
- Limited 1-year warranty
Installation
This custom-fit T-connector plugs into your vehicle's wiring harness, which is located behind the driver's-side and passenger's-side tail lights. Once you've plugged in the T-connector, run the hot lead up to your car battery. Connect the lead to the included fuse holder, and then connect the fuse holder to the positive terminal on your battery.
Once installation is complete, the 4-way connector will be stowed in an out-of-the-way location within your cargo area.
It is recommended that you use a small amount of grease on all electrical connections - the plugs on your automobile and the 4-pole connector itself - to help prevent corrosion.
Powered Tail Light Converter with Surface-Mount Technology
A tail light converter is built into this T-connector. This converter is a circuit-protected, battery-powered unit that bypasses the electrical routes that are used by a basic wiring harness. As a result, there is virtually no draw on your tail light circuits.
Because most trailers run on a two-wire system - wherein the brake and turn signals are carried on one wire - the separate brake and turn signals from your vehicle's three-wire system need to be combined so they are compatible with the wiring system of the trailer. This converter combines the brake and turn signal functions of your automobile so that they run on one wire to properly activate your trailer's tail lights. Note: This will not affect how the tail lights on your vehicle operate.
Curt builds each tail light converter using surface-mount technology (SMT). This method of construction involves soldering electronic components directly to the surface of a printed circuit board. SMT eliminates the need for leads, which are used in older through-hole technology. The result is a circuit board that is smaller yet provides more routing area and that offers superior performance, reliability and durability.
Circuit boards constructed using SMT have been shown to perform better under rough conditions with excessive vibration than those made using the through-hole method. And where would vibration be more likely to occur than in towing applications? Curt converters also produce less heat, leading to increased durability and longer life. In addition, lower levels of resistance ensure better performance, especially for parts that operate at higher frequencies.
Each Curt circuit board is made using high-quality components that are pieced together in the most technologically savvy fashion, leading to greater predictability and reliability in functioning.
56468 Curt T-Connector Vehicle Wiring Harness with 4 Pole Trailer Connector
Installation Details
This Product Fits The Following Vehicles
- 2021 - 2024 Ford Bronco
- 2021 - 2024 Ford Bronco with LED Taillights
Customer Satisfaction Score:
94% were satisfied with this product
6% of customers were not satisfied
- Wrong item was ordered
- Defective
- Product did not meet expectations
Customer Reviews
Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector - C42WR
Average Customer Rating: 4.7 out of 5 stars (105 Customer Reviews)
Quickly and easily install a 4-way trailer connector on your vehicle with this custom harness. T-connector plugs directly into existing wiring. Powered converter reduces strain on wiring system and is made using SMT to ensure superior performance.by: Eporter04/20/2024
Kelsey was a great help. Courteous and knowledgeable. I haven’t installed the part yet, but have no reason to believe everything will work. Will come back for my trailers camper needs.
by: Stephen03/14/2024
Great product. Right price, fast delivery, and quick response time. Thank you.
by: Joe 04/03/2024
Excellent harness, fit as it should
by: Kevin02/24/2023
First of all, I initially ordered the wrong item and reached out to etrailer. I spoke to Will S. in Customer service, who could not have been more professional, courteous and helpful. In the past few years, most corporate customer service has been horrible, but not at etrailer, it was exceptional. Will S. is an asset to the organization and I will be using etrailer in the future simply because of the experience I had correcting my own mistake. Thank you Will.
Regarding the setup, it was a bit more difficult than I thought it would be. The reviews said a simple setup, but the definition of simple is subjective.
A few months ago, I ordered a receiver and wiring harness for my Subaru CrossTrek the reviews said installing the harness was 'simple'. I didn't believe it, but when I installed the harness, the wiring process involved simply plugging in the harness. (Just plug the harness into the factory plug behind the rear seat). Yes I had to lift the carpet a bit to find the plug, but that was it.
This harness for my Ford Bronco, involved disconnecting the tail lights and inserting the harness plug mid-stream between the separated connectors. This was not too bad, but the installation also required running a power line to the battery.
Fortunately, the Bronco has powered Aux switches, so I ran the wire to the number 6 Aux connection and it worked great. Then I spent the next hour shimmying under the vehicle to thread the power line through and tie-wrap it to other wires under the vehicle.
So, yes the installation is simple. However, as stated previously, simple is a subjective word.
by: Robert 03/28/2024
Easy to install. Works great.
by: Steven05/21/2023
Product was for LED Broncos, mine is a Base. Had to have a trailer shop swap wires in the harness. Worked for a while and now one brake light on the Bronco is out. Ripping this out and getting the proper Ford harness.
by: Stephen 07/05/2023
Really easy to install, on the bronco I ran it behind the paneling and use the 12v outlet for power. The wiring stored in the jack compartment. It’s a cleaner install than putting everything under the car.
by: Jason 02/12/2024
It was straight forward and functional.
by: Kevin 10/20/2022
Great product and service. Thank you
Kevin
10/22/2023
still working great
Mike L.
11/10/2023
@Kevin Great, glad to hear that!
by: Brian 09/11/2023
Very easy installation. Incredible product at a great price.
by: Neil 06/27/2023
Very happy with the quality and ease of installation.
by: Foster06/20/2023
Good instructions and all worked just fine for my 2022 Bronco.
by: Rob03/07/2023
It worked out after I modified the wiring. This harness is for bronco with LED lights.
by: Ricky09/03/2022
This wiring harness was a piece of sh@t! If it wasn’t for the guy on the [onllne] channel “Budget Bronco” I never would of gotten this thing to work. Watch the video!
Jenny N.
9/20/2022
I recommend watching the video review that we have in the link below.
by: Jody 10/28/2022
The OEM kit requires tapping into existing wires which increases risk of corrosion. This kit taps into existing connectors to alleviate that risk. I did modify it so it fits the OE hitch to look like it was factory installed. It was easy to install, works perfect, and eTrailer was great with the order and shipping, too.
by: Michael 05/23/2023
Worked nice for what I needed it to do on my trailer.Easy install great service E Trailer thank you
by: Tom 02/07/2023
The wiring harness worked, I put the other harness on and no left or right
lights, this c42wr did the job. thanks
the other items have not installed yet next project
by: Justin01/06/2022
2021 Ford Bronco
2021 bronco. Great quality but… the passenger taillight plugs had the wiring wrong. I found that the right blinker wasn’t working because of the way they had the pins pushed into the plugs in the wrong location. They had the pin for turn signal in a part of the plug that didn’t go to anything on the vehicle side. The green wire should have been where the white wire with black mark is. I was able to pull the plugs apart and move the pins into the correct locations. CURT NEEDS TO FIX THIS.
And maybe it was only the one I received.
Thomas M.
1/24/2022
I have reached out to Curt, they mentioned that this harness will only work with LED tail lights. They have passed this issue to their engineering team to research.
by: Vernon08/23/2023
Wiring worked perfect. Installed in a couple hours and towed it home.
by: Michael01/19/2023
Installed on a customers vehicle. No right rear turn signal was my reward. Made me look like a fool when I said sorry but I have to call the company and you’ll have to bring your brand new Bronco back again. After speaking with a rep who was helpful she read the reviews and was like yeah sorry some of them are wired wrong. I’d pay 2 3 4 times as much for a quality part that lasted is a 60k dollar ride.
by: Chris03/28/2022
The description of this needs to have a warning for LED tail lamps only. I’m going to change the pins around but this will not work for non LED. There is nothing listed about this that says LED until you get to the reviews. Come on etrailer be better!
Jenny N.
4/6/2022
When the fitguide is used for a 2021 Ford Bronco and the wiring harness option is ed there is a down menu to choose whether the Bronco has LED tail lights. For those without LED tail lights you would want to use part # 119190KIT.
by: Mike G09/21/2023
Very easy to install.
by: David 07/11/2023
This was has been a great purchase. Fast delivery, and easy install! I recommend it hightly!
by: Philip 08/09/2023
everything works as it should!
by: Bill 12/08/2022
I have a 22 Bronco, wiring harness arrived 2 days early. So easy to install, finished in about an hour. Everything functions as it is suppose to. Excellent product, excellent customer service response getting harness out in the mail. Recommend to all.
25
105
Show More Reviews
See what our Experts say about this CURT Custom Fit Vehicle Wiring
- Trailer Hitch Receiver Fit For 2024 Ford BroncoWe do have a trailer hitch that fits your 2024 Ford Bronco, at the following part number: - Curt Trailer Hitch Receiver # C76WR I verified this fit directly with the manufacturer for you. I also wanted to add that if you are looking for a 4-way trailer wiring harness the correct fit will depend on if your Bronco has LED taillights or not: - WITHOUT LED Taillights: T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector # C87BR - WITH LED Taillights: T-Connector Vehicle...
view full answer... - Recommended Hitch for a 2023 Ford BroncoThe best option to add a hitch to your 2023 Ford Bronco is the Curt Trailer Hitch item # C76WR. This hitch is custom fit and bolts to your Bronco with included hardware. This is a class III hitch with a 2" receiver. It has a 3,500 lbs towing capacity and 350 lbs maximum tongue weight. I have attached a couple of pictures below along with an installation video so you can see what this hitch looks like when installed. If you are planning on towing you will also need a wiring harness item...
view full answer...
- Recommended 7 Pin Connector For A 2021 Ford BroncoWhen it comes to installing a 7 pin connector on your 2021 Ford Bronco with LED Taillights you first will need The Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector # C42WR. Next you will need The Universal Installation Kit for Trailer Brake Controller - 7-Way RV and 4-Way Flat - 10 Gauge Wires # ETBC7.
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- Correct Curt T-Connector Vehicle Wiring Harness for 2022 Ford BroncoThere are two different tail light bulbs types on a 2022 Ford Bronco, LED and incandescent. If you have LED then you need the Curt T-Connector Vehicle Wiring Harness part # C42WR or if you have incandescent then you need the Curt T-Connector Vehicle Wiring Harness part # C87BR.
view full answer... - Correct Curt Wiring Harness for 2023 Ford Bronco with LED or Halogen Tail LightsIt does matter if your 2023 Ford Bronco has LED lights or not, but once you figure that out it's just a simple matter of getting either of these harnesses: - With LEDs # C42WR - Without LEDs # C87BR Both options plug in behind your tail lights and then draw power from the vehicle battery via the included wiring lead. I also recommend picking up the mounting brackets # C57202 and # BK4F so you can secure the 4-Way connector next to your hitch receiver for easy access.
view full answer... - Can You Install Redarc Tow-Pro Elite Brake Controller on 2022 Ford Bronco Without SplicingIn order to install the Redarc Tow-Pro Elite Brake Controller part # RED63RR on a 2022 Ford Bronco you'll first need the Tekonsha Plug-In Wiring Adapter for Electric Brake Controllers part # 22292 which will make for a plug and play install up at the front of the vehicle. Then, you'll need a 4-way and 7-way adapter at the rear for which I recommend both the Curt T-Connector Vehicle Wiring Harness part # C42WR and 4 to 7-Way with 4-Way Adapter part # ETBC7. The factory brake controller wires...
view full answer... - Does the Curt Hitch 13493 Fit a 2024 Ford Bronco?Yes, it does. The Curt Hitch 13493 or our part number item # C76WR is confirmed to fit the 2024 Ford Bronco. This hitch is custom fit and bolts to your Bronco with included hardware. This is a class III hitch with a 2" receiver. It has a 3,500 lbs towing capacity and 350 lbs maximum tongue weight. I really like this hitch because of how easy it is to install it. You only have to install four bolts to your rear bumper to get this hitch set up. I have linked an installation video below along...
view full answer... - Recommended 4-Way Wiring Harness for a 2021 Ford Bronco The Curt Wiring Harness item # C42WR is the same as part number 56468. We just use a different inventory number than Curt does. This wiring harness is confirmed to fit the 2021 Ford Bronco's with LED lights. If your Bronco has incandescent bulbs you will need item # C87BR.
view full answer... - Will the Curt Vehicle Wiring Harness Work on 2021 Ford Bronco With LED and Halogen TaillightsThe Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector # C42WR is designed to fit a 2021 Ford Bronco with LED taillights. This will not work with your LED and Halogen lights. For your 2021 Ford Bronco, I recommend the Tekonsha T-One Vehicle Wiring Harness # TK99VR. We have found Tekonsha to be the most reliable when it comes to a 4-way wiring harness like this. This wiring harness uses the same style t-connector which plugs into your existing wiring for a 4-way...
view full answer... - Best 4-Way Trailer Wiring Harness For 2023 Ford BroncoGood question, and for your 2023 Ford Bronco the best 4-way trailer wiring harness is frpm Curt, with the correct one for your Bronco depending on if your Bronco has LED taillights or not: - WITH LED Taillights: Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector # C42WR - WITHOUT LED Taillights: Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector # C87BR
view full answer... - 2023 Ford Bronco Wildtrak Trailer Hitch and Wiring RecommendationsSince flat tow wiring is designed to receive a signal and trailer wiring harnesses are designed to send a signal you will need a second wiring harness on your 2023 Ford Bronco Wildtrak, but it will be a style that tees in so it will fit with the Curt flat tow wiring. Here are the parts I recommend installing on your Bronco: - Draw-Tite Max-Frame Trailer Hitch Receiver # DT37GR - Curt Wiring # C42WR (for 4-Way flat) OR Tekonsha Wiring # TK55VR (for 7-Way) - Wiring Bracket # BK4F (for...
view full answer... - Troubleshooting 4-Way Connector Install On 2022 Ford Bronco LED Tail Lights Brake Lights Not WorkingIt sounds like there is either an issue with the powered converter or the brake wire which attaches to your 2022 Ford Bronco. You can use a Test Light # PTW2993 to test for power on the red wire of either the Tekonsha # TK99VR or Curt # C42WR when you press the brakes on your Bronco. If you have power on the red wire going into the converter and nothing coming out for the brake lights then you know the converter is defective. If you find there is no power on the red wire connecting to the...
view full answer... - Running lights Not Coming On Trailer After Installing The Wiring Harness # ETBC7With all the other functions working properly it sounds like you may have ran into a ground issue. You need to make sure all of the lights are grounded to a clean and corrosion free bare metal surface. If there is anything between the light ground and the metal trailer frame could interrupt the ground. Running jumper wires from the light grounds to the main trailer ground connector ground could help as well.
view full answer... - Curt Trailer Wiring Harness that Fits 2021 Ford BroncoCurt has a trailer wiring harness that fits your 2021 Ford Bronco with the part # C42WR which is a plug and play style of harness but the part number you mentioned is not the correct kit to use.
view full answer... - How to Install Curt Trailer Hitch on 2024 Ford BroncoIt honestly couldn't be any easier to install the Curt trailer hitch on your 2024 Ford Bronco, and I'll explain but first here is the correct part number for the hitch that fits: - Curt Trailer Hitch Receiver # C76WR Now, to install the # C76WR all you do is lift it up, insert the included bolts through the holes, and torque them. That's literally all there is to it. I have added a cut out below of the instructions showing the complete install so you can see how simple it is. If you...
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- Recommendations For Mounting A 4 And 7 Pin Adapter To 2021 Ford Bronco Factory HitchFactory mounts will end up being different than aftermarket ones, so the only thing I can recommend is removing the 4 Flat mount and drilling two holes in the hitch for the Hopkins Endurance Multi-Tow # HM47180 to mount to. On the factory hitch where your 4 Flat mount is located, it is designed for holding wiring like this, but how the 7 Way will mount will end up being very low as it will hang down below the receiver opening. What may be a better option is the Hopkins 7-Pole and 4-Pole...
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- Best 4-Flat Wiring Harness for a 2021 Ford Bronco Sport I have a solution for you that has the same plug n play installation but the part you referenced does not fit your 2021 Ford Bronco Sport. You will want Tekonsha T-One Vehicle Wiring Harness item # TK46FR. This custom-fit T-One connector plugs into your Bronco's wiring harness, which is located in the rear cargo area. I have linked an installation video so you can follow along with the process.
view full answer... - Parts Needed to Add 7-Way to 2023 Ford BroncoTo get your 2023 Ford Bronco set up with a 7-way, there's just a couple parts you will need. One of them is a 4-way, just keep in mind the right one for your Bronco will depend on if you have LED taillights or not: - WITH LED Taillights: T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector # C42WR OR - WITHOUT LED Taillights: T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector # C87BR - Universal Installation Kit for Trailer Brake Controller # ETBC7 You...
view full answer... - Correct Curt 4-Way Trailer Wiring Harness For 2023 Ford BroncoThe correct Curt 4-way trailer wiring harness for your 2023 Ford Bronco will depend on if your Bronco has LED taillights or not: - WITH LED Taillights: T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector # C42WR OR - WITHOUT LED Taillights: T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector # C87BR
view full answer... - Does Curt Trailer Wiring Harness for 2021 Ford Bronco Work with LED TaillightsYes, the Curt trailer wiring harness part # C42WR is a confirmed fit for your 2021 Ford Bronco with LED taillights. This kit was actually designed for the versions of the vehicle that have LED taillights.
view full answer... - Recommended Trailer Hitch Wiring Harness For A 2023 Ford Bronco With LED Tail LightsFor a 2023 Ford Bronco with LED tail lights you'll need the Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector # C42WR. This harness is fairly simply to install with its plug-in connectors. You will need to mount the ground wire to the frame using the included self-tapping screw and run the black wire to the battery using the butt connectors and fuse holder. Overall, it's a really easy install that you could do yourself at home.
view full answer... - Complete Towing Setup For A 2022 Ford BroncoYes, for your 2022 Ford Bronco, you can use the Curt Trailer Hitch Receiver # C76WR. This hitch will bolt to your vehicles frame, has a maximum towing capacity of 3500-lbs, and a maximum tongue weight of 350-lbs. You'll want to check your vehicle owners manual for your vehicles maximum towing capacity, and compare that to the hitches maximum towing capacity, and use the lowest rating between the two. You may also want wiring so your trailer, or hitch mounted accessory has lights while...
view full answer... - Recommended Trailer Wiring Harness for a 2022 Ford Bronco With Signature Taillights Yes, for your 2022 Ford Bronco we have the Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector # C42WR. This wiring harness will simply plug into your vehicle's factory wiring harness and provide your vehicle with a 4-way flat trailer connector.
view full answer... - Will Curt Trailer Hitch Receiver Fit 2023 Ford Big Bend BroncoYes, the Curt Trailer Hitch Receiver # C76WR fits all models of the 2023 Ford Bronco. That includes your Big Bend trim. It has a simple bolt-on installation and comes with a limited lifetime warranty. If you plan on towing, you will also need wiring and a ball mount. If you have LED taillights you need the # C42WR and for incandescent you need # C87BR. For a ball mount, check out the Curt Towing starter kit # C45534. This comes with a 2" ball, hitch pin, hitch receiver lock, hitch cover,...
view full answer...
Do you have a question about this Custom Fit Vehicle Wiring?
Info for this part was:
Edited by:
Lindsey S
Installed by:
Jeff D
Expert Research:
Jameson C
Video by:
Dustin K
Updated by:
Wilson B
Written by:
Mike S
Test Fit:
Bradley B
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Jenny N.
2/25/2023
Yep, it really depends on the vehicles wiring as to how simple the installation will be. I appreciate a good shortcut however I need to say that actually running the power wire to the battery is the best bet. Wiring it to anywhere else may damage the vehicle wiring as it could overload it. I have a helpful FAQ for tips on running the wire to the battery.
Helpful Links
faq-Routing-a-Power-Wire.aspx