Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector
(87 reviews)
Price: $39.32
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Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector
Item # C56049
Retail:$74.53
Our Price: $39.32
You Save: 47%
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- All Info
- Reviews (87)
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CURT Custom Fit Vehicle Wiring - C56049
- Custom Fit
- Trailer Hitch Wiring
- 4 Flat
- Converter
- CURT
Quickly and easily install a 4-way trailer connector on your vehicle with this custom harness. T-connector plugs directly into existing wiring - no cutting, splicing or tapping required. Converter 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 - no cutting or splicing of wires
- Locate connection points in rear cargo area
- Plug in T-connector
- Includes a tail light converter to ensure that your vehicle's wiring matches that of your trailer
- 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: 5 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 interior trim panels in your rear cargo area.
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.
Tail Light Converter with Surface-Mount Technology
A tail light converter is built into this T-connector. 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.
56049 CURT T-Connector - Surface Mount Technology - 4 Wire
Installation Details
This Product Fits The Following Vehicles
- 2007 - 2008 Hyundai Elantra
- 2009 - 2010 Hyundai Elantra Sedan
- 2009 - 2010 Kia Optima
- 2009 - 2009 Kia Optima
- 2006 - 2010 Hyundai Sonata
- 2006 - 2010 Hyundai Sonata
- 2011 - 2014 Hyundai Sonata excluding Hybrid
- 2011 - 2014 Hyundai Sonata non-Hybrid models
California residents: click here
Customer Satisfaction Score:
92% were satisfied with this product
8% of customers were not satisfied
- Wrong item was ordered
- Product did not meet expectations
- Too difficult to install
Customer Reviews
Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector - C56049
Average Customer Rating: 4.9 out of 5 stars (87 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 - no cutting, splicing or tapping required. Converter is made using SMT to ensure superior performance.by: James03/19/2024
This is my second hitch and harness, my car was in a wreck so I'm replacing the damaged hitch. This hitch is very easy to install and does the job well. etrailer provides great how-to videos and customer service.
by: Charles 09/04/2023
2011 Hyundai Sonata
Easy installation, clear directions, I would highly recommend. I was going to add a picture, but once installed you can’t see anything. Invisible except when using! Still wiring the trailer, will snap pic when all done.
by: Ian 09/05/2023
2010 Hyundai Sonata
Product got to my house quickly and I was able to install it quickly on my 2010 Hyundai Sonata. It was easy plug in. Does the job well. I’d highly recommend this product to anyone needing it. Easy to install. Does not take long at all! Thank you etrailer! I’ll be shopping again with you soon!
by: Jonathan06/29/2023
hitch mounting holes on bracket was a little off had to pull it in but nice finish, and wiring harness was easy plug and play.
by: Norman R.05/21/2013
2006 Hyundai Sonata
4 hitches in 4 years, plus plug-in harnesses. Everything always fit and functioned properly. The installation videos are superb. A very painless and stress-free experience. Thanks
by: Lito10/08/2017
2010 Hyundai Elantra
All harnes Mach perfect. Only plug and unplug connectors. 5 minutes job is dam
by: ND Hauler12/20/2021
A must buy with the Sonata hitch, Take your time and make it look nice. Very easy install.I wrecked a couple plastic push in screws. Napa had them. Bring in the old one to match up.
by: Hunter05/15/2021
I put two new trailer light sets on my trailer and only one side will work. Both sides work with other wiring harnesses
Heather A.
5/22/2021
Thank you for your review. It sounds like you are having a common ground issue. In most cases when some trailer lights work and others dont it is the ground connection on the vehicle side or the trailer side. You want to make sure the wiring harness ground connection is grounded to a clean bare metal surface free of dirt or paint.
by: Jeff W06/26/2013
This is one outstanding product. There's no cutting and splicing of wires. Why didn't someone think of this before? It took far longer to remove the car's cover panels than to connect this wiring harness. Also, to my amazement, the instructions were specific to my vehicle, including pictures! I have just one problem with this product. It's connector doesn't make reliable connection with the trailer's connector. I have to wiggle the connectors and play around till all lights are working, and then I have little confidence that they will stay working till I get where I'm going. The problem is not on the trailer end because I never had any problems with the connector on the previous wiring harness.
by: David M12/20/2016
2008 Hyundai Elantra
I have an old trailer that I use to take yard debris and other trash to service center for disposal. It does not need lights but thought it would be best. Wow, the kit sent was like so easy to install. Everything fit and everything works great. Navigating the website was as close to perfect as I have seen. The amount of helpful materials was way beyond just what was necessary. Great job by everyone. My second purchase here and both were equally impressive.
by: Timothy M.05/17/2021
Worked well for my 2007 Hyundai Sonata. I also purchased the Curt hitch receiver hitch and drawbar. All 3 of these Curt products work exactly as advertised and are holding up well after a year of normal use. I highly recommend them.
by: Brian07/04/2018
2008 Hyundai Elantra
This wiring harness was installed in less than 15 minutes. The direct plug-in with no splicing is ideal for the DIY person. I will use it along with the Curt trailer hitch I also purchased from you. I would highly recommend this product to others!
by: Sebastian 11/06/2022
I love it. It fits very well and is exactly what I needed. I love how etrailer knows what fits your car and that they have install videos too!
by: RICH07/31/2013
Hyundai Sonata
I dreaded this part - installing the wiring. It was so simple. SO SIMPLE. And when I had my trunk panel off, I was able to determine that the jackwagons at my local body shop didn't tighten my trunk latch properly when they did some work - so this wiring kit helped me there, too. ALSO - It just worked. I plugged it into each tail light, plugged it into the trailer, and VOILA! Frickin LIGHTS! To be easier, I can only imagine chucking the unopened package at my unopened trunk and having it install itself, via some obscure nano-materials interaction process. But that's just silly. I'm keeping an eye on it, just in case - but man - what a good product for a good price.
by: Rickie C.08/23/2013
2010 Hyundai Elantra
I watched the video and started the installation. It took less time than it said it would. Only thing I ran into was do NOT put the white ground wire to a bolt that is on the tail light assembly on the inside. I had a back feed to the trailer lights so both lights wound blink when turn signal was on. Ground it by screwing it to the body inside the trunk and it will work properly.
by: Ciera09/27/2018
2010 Hyundai Sonata
This wiring harness was simple! Unlike other harnesses I've seen on the market (where you have to splice and reconnect wires) this kit was plug and play ready...couldn't have been much simpler! It also came with zip ties and adhesives for the 'extra organized' ones out there!
by: Rooster12/26/2021
2008 Hyundai Sonata
Well made video made this a very easy installation. I haven't used this wiring harness yet, so I can't comment on it's actual integration with the vehicle and trailer or it's longevity. All items seemed to be well-made so don't doubt it will last. overall a great experience.
by: Warren04/23/2018
I have used this hitch and wiring harness extensively over the past year. Works great, great value.
by: John B10/06/2019
Second hitch purchased from etrailer, quality same as the first ,excellent. Installation proceeded without any big issues. A floor jack helped make a one man installation simple. Wireing revealed a faulty brake light switch.
by: Chris04/18/2013
I was amazed at how easy it was to install both the hitch and the wiring harness. The total job took 2 of us less than 45 minutes to complete.
by: Jon07/30/2018
This was much easier to install than I thought. Here's their video. Made life a lot easier.
Jon
7/30/2019
Product is still working great. Had never come loose and still feels as sturdy as when I installed it.
by: Jeff G07/04/2020
Arrived in New condition. My garage mechanic installed it with problem, and it's been great for carrying my bike hitch for hauling four bikes around.
by: James N11/15/2014
2013 Hyundai Sonata
First, I would like to say that I received this product quickly and promptly. Furthermore, the communication was phenomenal. After opening the package and looking at the harness, I could tell this was going to be very easy to setup. Took a little time getting the panels in the trunk off, but once I did, everything was simple. One thing you will need to do is have a good ground. Either utilize the sheet metal screw is included and ground or sand an area to remove the paint. Ease of installing is 1 of 5 (very easy). Product reliability, not sure yet since I haven't actually taken it out on the road. Will recommend this harness and any other harness this company makes to anyone. No splicing or cutting, ease of installation is what you need, here you go.
by: Barry Jennings06/24/2013
The wiring harness was a piece of cake to install. It took longer to remove and replace the plastic panel than it did to plug in the connectors and route the wires.
by: chuck g07/02/2015
2006 Hyundai Sonata
The wiring harness for my 2006 hyauni sonata was very easy to install. It took me about 40 minutes from state to finish. Etrailer you are the best. Thank you
Chuck
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Show More Reviews
See what our Experts say about this CURT Custom Fit Vehicle Wiring
- Why Would Stoplights and Turn Signals Not be Bright on Trailer WiringThere may have been a slight weak ground that was allowing some of the lower power draw functions to still work. The grounds on both the trailer side and the vehicle side, as well as the grounds for all of the trailer lights will need to be attached to clean and corrosion free bare metal surfaces. A weak ground issue would show up as soon as there is higher power draw on the system. Brake lights light up brighter and require more power so that is when the issue showed up. Making sure...
view full answer... - Do I Need Diodes or Resistors For Trailer Wiring Harness Installation on 2014 Hyundai Sonata GLSSince the Tekonsha # 118557 and Curt # C56049 are powered by a connection to the battery and have converter boxes, there aren't any issues when using them with LED tail lights on your 2014 Hyundai Sonata GLS; you won't need to use any diodes or resistors to make your harness work properly to power your trailer lights. I do recommend using the Tekonsha # 118557 since we've found that the powered Modulite converters on these harnesses are much more reliable than some of the others available....
view full answer... - Trailer Brake Lights Go Out When Brakes Are Applied on a Trailer Towed by 2009 Hyundai SonataYou will want to look at the grounds and wiring for the lights themselves. This sounds like a ground or short circuit issue. Trailer lights ground through the mounting studs unless there is an obvious ground wire. In either case the grounds need to be attached to clean and corrosion free bare metal surfaces. When you inspect the wiring, look for any nicks with exposed wire that could be touching the metal trailer frame. This would cause a short. I have included a link to our wiring FAQ...
view full answer... - Trailer Brake Lights Do Not Work After Installing Curt Trailer Wiring Harness # 56049It sounds like a bad ground connection. What you will do is disconnect the trailer from the vehicle. Then make sure the ground for the wiring harness # C56049 is attached to a clean and corrosion free bare metal surface. Use a circuit tester like # PTW2993 if you do not already have one to test the pins on the 4-Way while someone sits in the vehicle and goes through all the lighting functions. If the brake lights/turn signals still do not work use hte circuit tester to test the wires going...
view full answer... - Why is Powered Converter Type Trailer Wiring Harness Needed for 2013 Sorento SXAll of our 4-pole trailer wiring harness kits for your 2013 Kia Sorento SX V6 without factory tow package are shown on the linked page, such as # C59496. All use a powered converter, which means that rather than simply plugging in to your taillight wiring and using the car's internal wiring to transmit signals for the trailer, these powered converters protect the car's wiring by delivering power for the trailer lights from a separate power connection at the battery. Each kit includes a...
view full answer... - Trailer Wiring Harness for a 2014 Hyundai Sonata GLSWe do have a wiring harness that will fit your 2014 Hyundai Sonata GLS. One option is Tow Ready harness # 118557. I checked with Curt and you can also use harness # C56049. I have included a link to the installation instructions for you.
view full answer... - Will the Curt Wiring Kit # C56049 Fit a 2017 Hyundai SonataThere were some changes to the connectors for the taillights from your 2011 Hyundai Sonata to your 2017 Hyundai Sonata that won't allow the connectors on the Curt # C56049 to be compatible with the taillight connectors on your 2017 Sonata. This change occurred between the 2014 and 2015 model year Sonatas. If you look at the 2 pictures that I have attached you can see the difference in the Curt # C56049 for your 2011 Sonata and the Curt # C56247 which is confirmed to fit your 2017 Sonata. I...
view full answer...
- Trailer Brake Lights Not Working with Curt Wiring Harness Installed on 2009 Hyundai SonataIt could still be a ground problem. Ground problems normally show up when there is more draw on a system such as when you have the running lights on and then use another function like a turn signal or brake light but can show up any time. Since the brake lights draw more constant power than any of the other functions it makes sense that a ground problem would show up when using the brakes. Make sure that the vehicle side and trailer side connectors are clean and free of corrosion inside...
view full answer... - Choosing 4-Pole Wiring Harness for Non-Hybrid 2013 Hyundai Sonata SEThe Curt harness # C56049 and the Tekonsha harness # 118557 both are confirmed fits for your non-hybrid 2013 Hyundai Sonata SE. The one big difference between them, as you noted, is that the Tekonsha kit is a powered harness that can provide higher current output for the trailer's lights, up to 4.2-amps per stop/turn circuit and up to 7.5-amps for the running light circuit. The Curt harness cannot deliver as much current since it relies on the car's own internal wiring to deliver the...
view full answer... - Which Curt Trailer Wiring Harness Fits 2013 Hyundai Accent HatchbackThe correct Curt trailer wiring harness for your 2013 Hyundai Accent Hatchback is the part # C56254 and not the # C56049 as it only fits Sedans. I put a note in your order notes that you are going to need to cancel and reorder the correct kit.
view full answer... - Parts to Transport Mobility Scooter With a 2006 Hyundai SonataIt looks like the only hitches available for your 2006 Hyundai Sonata have a Class I rating so you're going to need to use a trailer to transport the scooter as opposed to a hitch-mounted lift. This is due to the 200 lb tongue weight rating of the hitch itself which, to my understanding, the scooter would already be pushing the limits for. If you're interested in going this route then I recommend using the following parts: Curt Trailer Hitch Receiver - # C11325 Curt T-Connector Wiring...
view full answer... - Trailer Wiring Harness Recommendations for 2012 Hyundai SonataBoth the Curt # C56049 and the Tow Ready # 118557 would work with your 2012 Sonata. The primary difference between the two is that the Tow Ready model is a powered converter that obtains the power to drive the trailer taillights directly from the battery, instead of pulling the power through the taillight wiring. The converter obtains its switching signals from the taillight circuits only. This provides a more reliable power supply and another layer of protection for the vehicle wiring...
view full answer... - All Parts Needed to Tow U-Haul Trailer With 2011 Hyundai Sonata Non-HybridAppreciate that info and we can go ahead and get you all the parts you need, including the ball mount, to tow the U-Haul trailer with your 2011 Hyundai Sonata non-hybrid. I'll go ahead and list them for you below: - Curt Trailer Hitch Receiver # C11025 - Vehicle Wiring Harness with 4-Pole Flat Trailer Connector # C56049 - Curt Class II Euro Style Drawbar with 1-7/8" Ball - 6-5/8" Rise # C45591 - Hitch Pin and Clip # F-4 Both the hitch and wiring harness are fits for your '11 Sonata,...
view full answer... - Trailer Lights Not Working and Brake Lights Only Work with Ignition Turned OffThis sounds like a ground issue and possibly a short somewhere. Ground problems normally show up when there is more draw on a system such as when you have the running lights on and then use another function like a turn signal or brake light but can show up any time. Make sure that the vehicle side and trailer side connectors are clean and free of corrosion inside and out. The main connector grounds should be attached to clean and corrosion free bare metal surfaces. The light grounds should...
view full answer... - Troubleshooting Trailer Wiring Harness on 2009 Kia OptimaWhat kind of tester are you using? I'd use an incandescent bulb tester like part # PTW2993 on the vehicle trailer connector while each function is activated. Turn on right turn signal, test pin fed by green wire. Turn on left turn signal, test pin fed by yellow wire. Turn on running lamps, test pin fed by brown wire. Applying the brakes should cause the pins fed by the yellow and green wire to show voltage. If you're showing power on the appropriate pins as each function is activated,...
view full answer... - Troubleshooting Trailer Blinkers that Operate Both Sides of Trailer LightingFirst thing you should do at this point is test the 4-way of the wiring harness with a circuit tester part # PTW2993 for voltage on all of the right pins when the taillight signals are being applied. Just like in the video I attached. If the voltage checks out there but the trailer lights still don't function right then the problem is on the trailer wiring. Most likely there is a short between the two stop turn circuits on the trailer from exposed wire that sends both of the blinker circuits...
view full answer... - Can Wiring Harness # 118433 from 2010 Hyundai Sonata Fit 2014 Sonata Non-Hybrid ModelThank you for your 2011 purchase of a wiring harness. That actual part you ordered is Tow Ready harness # 118433 which is intended for 2006 through 2009 model years of the Sonata. It is not a confirmed fit for the 2010 Sonata, please note. The recommended harness for your 2014 Hyundai Sonata non-hybrid is Curt # C56049 which is shown in the linked video. This harness installs without any cutting or splicing of wires thanks to its custom-fit connectors. There is no resetting function for...
view full answer... - Can Converter Box of Trailer Wiring Harness be Tested for FunctionIt is very possible the converter box has gone bad but there is a way to test the box. What you will want to do is test the wires going into the box of the converter box for voltage with a circuit tester like the # PTW2993 to see if there is voltage going into the box when the taillight functions of your vehicle are applied, and then test the output side of the box to see if the current is making it through the converter. If not then the problem is that the converter box has shorted itself...
view full answer... - Troubleshooting Brake Lights After 4 to 5 Way Flat Adapter InstallationWhen all but one light functions fine, the issue can sometimes be that the harness is not connected securely or there's an insufficient or short to a ground on either the trailer vehicle side. There are other potentials as well but to start let's follow these steps to troubleshoot. Test at the 4-way plug with a circuit tester # PTW2993 for correct functioning. I have included an instructional video of what steps to take. If any function does not have correct power, test the wire going...
view full answer... - How to Determine Wire Functions to Install Curt 4-Way Wiring Kit C56175 on a 2010 Hyundai SonataWe actually offer plug-in wiring like part # C56049 for the 2010 Hyundai Sonata that will prevent you from having to do any testing or splicing. It plugs in between the taillights and the factory tail light wiring. View the installation instructions at the link provided. If you would rather install the # C56175 hardwire kit, you will need to use a circuit tester on the wires behind your taillights to find out which function each wire carries. We offer part # PTW2993, if needed. Have...
view full answer... - Troubleshooting Trailer Wiring on 2009 Kia Optima that Stops Working When Plugged into TrailerI spoke to my contact at Curt and after I explained to him your situation he said the problem is either you are overdrawing the converter box of the # C56049 or are overdrawing the taillight circuits of your 2009 Kia Optima. His advice was to convert your incandescent trailer lights to LEDs as they draw considerably less which should fix your problem. I attached a link to the right that has all of the LED trailer lights we offer.
view full answer... - Trailer Wiring Harness for a 2013 Hyundai Sonata HybridI checked with the manufacturers we carry and there is an option from Hopkins, # 46365. But this is a hardwire wiring harness and not a plug and play type of harness. This means you will have to test the vehicle wiring with a circuit tester such as # 3808 and then splice in the harness wires accordingly. You will want to consult your vehicle owners manual for information on towing with the Sonata. Many hybrids are not rated for towing and the hitches for them should be used only for accessories...
view full answer... - Trailer Wiring Recommendation for a 2011 Hyundai SonataSince your 2011 Hyundai Sonata is a non-hybrid model you would want the part # C56049. The # C56049 does not require running a wire up to the vehicle battery so it would be exactly what you want. Some vehicles have pretty delicate taillight wiring circuits so it is necessary to power the trailer taillights from the battery to protect them.
view full answer... - Left Side Trailer Lights Do Not Work When Vehicle Lights are OnThis sounds like a ground issue. Ground problems normally show up when there is more draw on a system such as when you have the running lights on and then use another function like a turn signal or brake light. Make sure that the vehicle side and trailer side connectors are clean and free of corrosion inside and out. The main connector grounds should be attached to clean and corrosion free bare metal surfaces. The light grounds should also be attached to clean and corrosion free bare...
view full answer...
Do you have a question about this Custom Fit Vehicle Wiring?
Info for this part was:
Updated by:
Lindsey S
Updated by:
Wilson B
Updated by:
Kristina F
Updated by:
Isabelle B
Expert Research:
Michael H
Expert Research:
Jameson C
Video Edited:
Joshua S
Video Edited:
Jacob T
Video Edited:
Chris R
Video by:
Dustin K
Video by:
Michael B
Test Fit:
Shane H
Test Fit:
David F
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Nd H.
12/21/2022
Excellent, thanks for saving me money. Love your products. Send 50 off coupons, cause Im so nice.