Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector
(183 reviews)
Price: $54.26
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Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector
Item # C55379
Retail:$91.03
Our Price: $54.26
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CURT Custom Fit Vehicle Wiring - C55379
- 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 behind tail lights
- 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 tail lights. You will have to remove the tail light assemblies to access this harness.
Once installation is complete, the 4-way connector will be stowed beneath your vehicle, near the trailer hitch. A mounting bracket (sold separately) is recommended to keep the connector secure.
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.
55379 CURT T-Connector - Surface Mount Technology - 4 Wire
Installation Details
This Product Fits The Following Vehicles
- 1989 - 1992 Toyota Pickup
- 1993 - 1995 Toyota Pickup excluding T100
- 1998 - 2004 Toyota Tacoma
- 1996 - 2004 Toyota Tacoma
- 1995 - 1995 Toyota Tacoma 1995.5 Mid-Year model
- 1995 - 1997 Toyota Tacoma 2 Wheel Drive
- 1995 - 1997 Toyota Tacoma 4 Wheel Drive
California residents: click here
Customer Satisfaction Score:
98% were satisfied with this product
2% 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 - C55379
Average Customer Rating: 4.8 out of 5 stars (183 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: Salvatore 02/03/2024
With some help from a YouTube video this was a cinch to hook up and I had it done in no time. Definitely ended up a lot cheaper than paying somebody else to do it and I know that the work got done right excellent product.
by: Paul M05/05/2024
Well... The electronic controller on the unit I received was bad, giving intermittent connections for the brakes, blinkers and hazard blinkers. I should have called etrailer immediately, described the symptoms and they would have sent me a replacement immediately. Instead, I spent most of a week trying to track down where the bad connection might be.
Now that I have a properly functioning unit, it is wonderful and easy to install. No trying to figure out which wires to tap into.
I do have a suggestion that you test the unit before fully installing it. This is very quick and easy. You have to take the tail lights off or otherwise get access to the taillight plugs to install this unit. Before proceeding further, plug this unit into the wires coming to the taillights and plug the other end into the trailer. If it works, you have a good unit. Unplug the unit and proceed to install it underneath the vehicle. If it doesn't work, call etrailer, describe the symptoms and they will send a replacement.
by: Melvin12/08/2023
1998 Toyota Tacoma
I always receive great service, great merchandise and a great price on everything I order. There was no exception on this order. The wiring kit I ordered for my 1998 Tacoma was an easy plug in and done.
by: Teresa 05/09/2024
Process of ordering was easy. Product is good quality. We even received order 1 day early.
by: Ken06/27/2020
2000 Toyota Tacoma
Product was an exact fit for my 2000 Toyota Tacoma. Super easy install. I saved the black plastic flexible wire tubing from my old wiring harness which I think adds a lot of protection. I would recommend buying this type of tubing to use. Also purchased the 4 pole flat bracket to fit the connector which makes for a nice professional finish. It easily screwed into the bottom of the bumper-----just had to drill two 3/32 inch holes. See picture
Overall very satisfied.
by: Eric M.09/14/2016
2003 Toyota Tacoma
Fast shipment!! Received hitch in a few days. instructions where right on and easy to use. Plus, online there was a video from etrailer on how to install the hitch. Hitch and wiring only took 2 hrs to install. Great product, great service will definitely order from them again! Thank you etrailer!
by: Jake05/14/2021
Easy install (took maybe 30-45minutes) and works exactly as it should. The wires were all the perfect length with maybe 6” excess per line. Only time I had to pick up a tool other than a screwdriver was for unhooking the battery terminal and drilling the ground wire into place.
by: Glenn Ruis04/14/2016
It's a great product, and was easy to install took about 30 minutes
by: Kekoa08/31/2023
Really well built highly recommend for light towing. The metal is thick
by: Richard05/31/2018
2001 Toyota Tacoma
This product is terrific. I found some weird wiring that someone did on the left rear light of my truck in the past. Apparently they were trying to get the trailer lights to work by adding direct battery wiring. I wasn't sure what to do so I decided to start by just removing all that extra stuff and installing this kit as per directions. I did that and boom!.... The the tailer lights worked perfectly first time out! I was very surprised... I was sure there would be problems. But there were not! It was just too easy!
by: Steve S.10/16/2019
Great produce. As you had told me about some vehicles, that some need help to work in using a wiring harness in lack of power from that vehicle. My 2002 Toyota Tacoma is one that needed help. When I called you back with my find,
you rushed a fix ( freely) to my need quickly for my truck that saved me from missing my hunting trip that I was leaving in less then a week. Great produce from a great company with great employees that care for each need of the public.
When [etrailer] was formed, obviously it was formed right from the top down, thinking about the person, the public.
GOD BLESS
Steve S.
10/17/2020
Still Great
by: Steven11/17/2023
2002 Toyota Tacoma
Truly plug-n-play. About a 20 minute in stall.
by: Joseph 03/16/2023
2003 Toyota Tacoma
Installed easy and all lamps are working. Haven't tested it on a trailer yet.
by: Bud G.10/31/2014
1995 Toyota Tacoma
The Curt T-Connector vehicle wiring harness arrived just a few days after placing my order. Everything I needed was included in the package. Installation was so easy even with removing my very old failed harness, installing the new one only took about 30 minutes. Connections were simple and no splicing! I would recommend etrailer to anyone.
Bud G.
10/31/2015
After a year of use it still works perfectly.
by: Roland07/28/2023
Does everything great, as advertised … easy to install, not for one person, needed another pair of hands…
by: James 03/21/2023
Works as intended. Instructions were c lear.
by: Kilowatt10/03/2021
Easy plug and play installation. Grounding to the frame is the only small challenge
Kilowatt
10/4/2022
Hitch wiring still working perfectly :
by: Michael 09/30/2022
2002 Toyota Tacoma
The wiring harness that I purchased for my 2002 Toyota Tacoma was the easiest install and worked perfectly. Thank you for taking the time to perfect your products and offer them to John Q Public.
by: Luke08/21/2022
1989 Toyota Pickup
Excellent product. Fit and finish exactly as described. Installed in 15 minutes. On my '89 Toyota Pickup (2wd extended cab 22RE DLX trim) there was no existing ground on the frame to attach the ground wire ring terminal to, so I had to drill a small hole and use the provided self-tapping screw to attach the ground. The hole is very small (3/32"), I'm not concerned about it causing the frame to crack.
by: M&m Muffler And Automotive05/14/2020
Had a customer bring in his vehicle and wanted us to splice into his wiring and install his own after market towing lights..needless to say we declined because of the liability and cutting into a wiring harness is never a great idea. So I ordered this towing harness for the customer and it arrived at the shop within 2 days. The customer was impressed with the way it connected into his vehicles wiring without any cutting of wires. The customer was Amazed on how simple it was and was very happy on the install and of course how it worked..., another happy customer is always good and using this type of wiring kit is better and safer when dealing with a vehicles wiring.
by: Terry Y.05/11/2019
2003 Toyota Tacoma
It was an easy plug in hookup to my 03 Tacoma. Only issue I had was I had to convert my trailer lights to L.E.D. from standard lights to make everything work properly. According to the technical advisor at etrailer, the converter from a 5 wire truck harness to the 4 wire used too much power to operate the standard lights.
by: Brad06/22/2016
1994 Toyota Pickup
Installed in no time. Quick shipping, fit the stock Toyota connector perfectly. All wires are plenty long. Would recommed.
Brad
6/22/2017
Still going strong, pull my trailer once a week and the lights are still working properly,
by: Ronnie Jonas06/30/2017
2000 Toyota Tacoma
I installed the wiring harness and trailer hitch on my 2000 Toyota Tacoma without any problems and I have used it without any problems. I always check to make sure my trailer lights are working prior to moving my vehicle and I have not had any problems. I am very pleased.
by: Todd 08/01/2020
2002 Toyota Tacoma
Love this wiring harness !! I had been lookIng for a wiring harness at my local Napa but couldn’t find exactly what I wanted , then I came across this one at etrailer , so glad I got it ! I didn’t want to cut into my trucks tail light system and I didn’t have to with this harness . Installation was quick and easy , and looks like a pro did it !! I plugged it into my trailer and Bam ! Every light worked , brake , turn signal , and running lights !!
by: MARK S09/14/2016
2004 Toyota Tacoma
GOOD SERVICE AND PRODUCT. SOME ISSUE WITH HARNESS / LEFT TURN SIGNAL. OLD TRUCK SO NOT UNEXPECTED.
Mark S.
10/19/2017
NO ISSUES. ACTUALLY SOLD THE VEHICLE COUPLE MONTHS AGO. GREAT PRODUCTS.
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Show More Reviews
See what our Experts say about this CURT Custom Fit Vehicle Wiring
- Differences Between The 4-Way Wiring Options For 2002 Toyota TacomaThere are not many differences between the Tekonsha T-One Vehicle Wiring Harness part # 118379, Curt T-Connector Vehicle Wiring Harness part # C55379 and the Hopkins Plug-In Simple Vehicle Wiring Harness part # HM43315 for the 2002 Toyota Tacoma besides the brand names. They all install the same and will give you a 4-way connector at the rear of the Tacoma to illuminate the trailer's lights. However, I recommend the Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector...
view full answer... - Troubleshooting 4-way Connector On 1992 Toyota Pickup Having Power But Not Powering Trailer LightsSince you tested the T-Connector 4-way connector on your 1992 Toyota Pickup 4WD V6 and the tester showed that all of the functions are working but you are not getting trailer lights then there is one troubleshooting step to try. Plug the trailer into the trucks connector and turn on the turn signals or have a friend apply the brakes. Using a circuit tester like # PTW2993 test the wires on the vehicle side connector, and if you have power there then test the wires on the trailer side connector....
view full answer... - Trailer Wiring Harness Converter Box Failed on a 2003 Toyota TacomaThe converter box alone in a trailer wiring harness such as # 118379 for your 2003 Toyota Tacoma cannot be replaced. The whole harness would have to be replaced. Since you have determined that all of the electrical signals going in are correct but not correct on the output side of the converter this does indicate a bad converter. But, if the converter stopped working because of a short somewhere on the trailer you will want to fix the short or the problem will keep happening. Make sure...
view full answer... - Troubleshooting Vehicle Fuses Blowing When Trailer Coupler Connects to Hitch BallIt sounds like there is a short somewhere in the wiring. First, make sure that both the vehicle side and trailer side connectors are free of dirt and corrosion. If the connector is corroded or dirty, it can cause excess power draw and blow a fuse. Simply clean out as needed. To start testing on the vehicle, you will want the change all of the blown fuses and then using a circuit tester like # PTW2993, test the vehicle side connector. You'll need some help so someone in the vehicle can...
view full answer... - Troubleshooting Trailer Blinkers that Only Work When Brakes are AppliedThis could be a ground problem. A bad ground connection can cause all sorts of problems. First check the trailer connectors on the vehicle and on the trailer for any dirt or corrosion and clean them out. Corrosion can also build up behind the connectors where the wires attach. On the vehicle side, make sure that the main ground is attached to a clean bare metal surface on the frame. On the trailer side connector, again make sure that the main ground is attached to a clean metal surface. Use...
view full answer... - Recommended Trailer Hitch Receiver For 2001 Toyota TacomaFor your 2001 Toyota Tacoma, I recommend the Curt Trailer Hitch Receiver - Custom Fit - Class III - 2" # 13013. This hitch is a confirmed fit for your truck and will give you a bolt on installation without any drilling required. For your trailer wiring, I recommend the Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector # C55379. This will install behind the tail lights of your truck to your factory wiring plugs. For a ball mount, I recommend the etrailer.com...
view full answer... - Troubleshooting Running Lights and Brake Lights on Trailer Connected to 2004 Toyota TacomaIf you are using an aftermarket 4-pole wiring harness like # 118379 or # C55379 in your 2004 Toyota Tacoma you can troubleshoot the lighting issue in several ways. First, check that the truck's own lights all work correctly. The harnesses like those noted above plug in to the truck tail light assemblies to get the lighting signals. If the truck's own lights do not function there will be no signals for the harness. If you unplug the harness and test the truck's lights and find that they...
view full answer... - Troubleshooting Fuses Blowing With Curt Trailer Wiring Harness On 2003 Toyota TacomaIt sounds like the converter is bad on your Curt T-connector # C55379. Since you re-grounded it, the harness should function correctly unless there is an issue with the converter because your vehicle lights are working. I recommend going with the Tekonsha T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector # 118379. If you have the same issue with this connector, then there is more to your issue than the harness and we will need to do further testing, but right now it does...
view full answer... - Troubleshooting 4-Way Vehicle Wiring Harness Not Allowing Brake Lights to Work on 2003 Toyota TacomaThe 4-Way Harness # C55379 for your 2003 Toyota Tacoma is going to use the factory wiring to identify when a function is activated and power the trailer connector. Since you mentioned your truck was converted to LED lights if you factory lighting has a resistor installed going to the brake lights this may prevent enough power from getting to the tail lights. You may have to either move the resistor or go with a powered module like the # C59236. This has a separate power wire which runs...
view full answer... - Does the Curt T-Connector Wiring Harness # C55379 Need to be Run to Battery on Toyota TacomaThe Curt T-Connector Vehicle Wiring Harness # C55379 referenced in your question is confirmed to fit your 2002 Toyota Tacoma. This custom harness will install by connecting directly to the built-in ports located behind the driver's-side and passenger's-side tail lights. You will need to remove the tail light assemblies to access the harness. Once connected, this will complete your installation. This particular harness does not need to be run to the vehicle's battery with an additional power...
view full answer... - Trailer Wiring Harness for a 1994 Toyota PickupWe have a harness that can work for your 1994 Toyota Pickup. First, the Tow Ready 17499-204 didn't have much information about it online, so I couldn't determine if it is compatible with your vehicle. The information I did find did not allude to being compatible with your truck. When it comes to wiring your vehicle, it's best to stick with something that is built for your vehicle. That's why I recommend the Curt T-Connector, part # C55379. This is a confirmed fit for the '94 Toyota Pickup...
view full answer... - Curt Wiring Harness # 55379 Compatibility with LED Bulb Replacements at Truck Tail LightsYes. The Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector # C55379 for your 2004 Toyota Tacoma will work fine with your replacement LED bulbs on your truck and the 12V incandescent bulbs on your trailer. Because you have used the conversion LED bulbs, the power getting to the harness has not changed and will not impact the function of the trailer wiring harness.
view full answer... - Recommendation For A Hitch For A 1996 Toyota TacomaA Class III hitch that is a confirmed fit for your 1996 Toyota Tacoma is the Curt Trailer Hitch Receiver, Item # 13013. This 2 inch hitch is a bolt-on installation with a gross trailer weight capacity of 5,000-lbs and a maximum tongue weight capacity of 500-lbs. However, your total towing capacity is limited to lowest maximum capacity of any of the pieces of your towing setup including your vehicle. You may made need additional parts for your project like trailer wiring and a ball mount....
view full answer... - Parts Needed to Wire Up 6-Way on 2001 Toyota TacomaNormally in a situation like this the best way to accomplish adding a 6-way round to a 2001 Toyota Tacoma is to first use a 4-way kit like part # C55379 to get the correct signals combined and then use an adapter like part # 37175 to convert it to a 6-way. Since you have a 6-way ready to wire up best option would be to use the # C55379 to get the circuits combined like you are needing and then cutting off the 4-way of the kit and wiring the circuits to the 6-way.
view full answer... - Trailer Turn Signals Dont Work After Installing T-Connector # C55379 on a 1996 Toyota tacomaIf the brake lights and running lights work on your trailer but not the turn signals then I don't think the issue is with the Curt T-Connector # C55379 on your 1996 Toyota Tacoma. I think it is on your trailer. Nevertheless you can still verify that the Curt T-Connector is working properly by using a circuit tester # PTW2992 to test the various light functions. The running lights will be on the brown wire while the green will carry the right turn/stop and the yellow will carry the left...
view full answer... - Recommended Replacement 4-Pole Wiring Harness for 2001 Toyota TacomaNice job recapping your troubleshooting efforts with the trailer lighting issue. I agree that based on your testing results it does appear the converter in the harness is toast. If it has been in service in the 2001 Tacoma for all these 16 years then you totally got your money's worth! Although we offer wiring from many good brands we do find that the best reliability tends to come with Tekonsha products. You can use the plug-and-play 4-pole harness # 118379. I recommend using dielectric...
view full answer... - Recommended Trailer Hitch Receiver for 2004 Toyota Tacoma Along With Wiring and Ball MountFor your 2004 Toyota Tacoma, I recommend the Curt Trailer Hitch Receiver - Custom Fit - Class III - 2" # 13013. This trailer hitch is rated for 500 lbs tongue weight or 600 lbs when used with weight distribution system. It is a custom fit bolt on installation and comes with all the hardware needed to install. It has a black powder coat finish over a protective base coat for excellent rust prevention. It is a sturdy square tube design that is 100% made in the USA. For your trailer wiring,...
view full answer... - Having Trouble Installing The Curt C55379 4 Flat Harness In A 4 Flat Mounting BracketThe Curt T-Connector Vehicle Wiring Harness # C55379 really should not have any trouble fitting into a 4 Flat bracket, like the # 18144, and we use these together pretty often. I have seen a few instances where the bracket was tighter than usual, but a moderate amount of force got everything snapped into place in very little time. The amount of trouble you are having is not normal by any means. Especially since you are going about it the correct way. This will sound odd, but it may be...
view full answer...
- Is Curt C55379 T-Connector Taillight Converter Harness Compatible with LED Trailer LampsThe Curt # C55379 taillight converter/trailer wiring harness is a fit for your 1991 Toyota Pickup, and is compatible with both incandescent and LED trailer lamps, so it'll work perfectly for you. I've linked to a product description video for you.
view full answer... - Comparison of Tekonsha and Curt Wiring Harnesses for 1999 Toyota TacomaThe amp draw on the product pages for both the # 118379 and the # C55379 wiring harness is how much draw the harnesses are designed by their manufacturers to handle. The amount of draw will be determined by the lights on your trailer. The Curt is designed to handle a little more than the Tekonsha harness, however they've both been tested on a 1999 Toyota Tacoma like yours.
view full answer... - 4-Pole Wiring Harness for 2002 Toyota TacomaWe offer two trailer wiring harnesses for your 2002 Toyota Tacoma, the Draw-Tite # 118379 and the Curt # C55379. Both harnesses are the plug-and-play type that will install in a similar manner at your Tacoma taillight assemblies as shown in the linked video. Given your choice of trailer lighting kit # TL5RK I suggest you opt for the Curt harness since it offers higher current output capacity than the Draw-Tite. Curt # C55379 provides maximum output of 3 amps per stop/turn circuit and 7.5...
view full answer... - Troubleshooting Trailer Lights Not Working When Head Lights Turn OnTypically when this happens after installing a wiring harness like the Curt # C55379, it's down to one of two causes. You'll want to start by checking the ground connection on the vehicle and trailer wiring harnesses. Make sure that these are connected to a paint, rust and debris free spot on the frame. You'll also want to check for potential shorts on the wiring, where there might be bare wiring touching a metal spot on the vehicle or trailer frame. The less likely cause would be too...
view full answer... - Confirmation of Fits for Hitch, Wiring and Brake Controller for a 2004 Toyota TacomaEverything you mentioned would be all that you would need for a towing setup on your 2004 Toyota Tacoma. The Curt hitch part # 13013 is a confirmed fit and then for a 4-way you would want the # C55379. Then to convert the 4-way to a 7-way and install the Primus brake controller part # TK90160 you would want the # ETBC7. I attached install videos for all products mentioned. The trailer wiring video is actually of a different brand wiring harness but the install process will be the same.
view full answer... - Will Curt Hitch 13086 Fit 1993 Toyota TruckThe Curt Trailer Hitch Receiver # 13086 is a fit for a 1993 Toyota Truck. This hitch is designed to fit on 1984 - 1995 Toyota Pickups, but if you have a different vehicle you are wanting to install a trailer hitch on just let me know and I can help you find the correct fit. If you don't already have trailer wiring then we also have the matching Curt Wiring Harness # C55379 which tees in behind the tail lights on your pickup and gives you a way to operate the lights on your trailer. You'll...
view full answer...
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Richard
5/31/2019
I Have never had to give my trailer lighting a second thought... Every time I check the lights they always work as they should