T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector
(198 reviews)
Price: $33.73
In Stock
T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector
Item # 118376
Retail:$72.87
Our Price: $33.73
You Save: 54%
Will this fit?
To see if this custom-fit item will work for you please tell us what vehicle you'll use it with.
In Stock
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.
- All Info
- Reviews (198)
- Q & A (0)
- Photos
Tekonsha Custom Fit Vehicle Wiring - 118376
- Custom Fit
- Trailer Hitch Wiring
- 4 Flat
- Converter
- Tekonsha
Quickly and easily install a 4-way trailer connector on your vehicle with this custom wiring harness. T-One connector plugs directly into existing wiring - no cutting, splicing or tapping required. Includes tail light converter.
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 driver's-side tail light
- Plug in T-connector
- Includes a tail light converter to ensure that your vehicle's wiring matches that of your trailer
- Constructed of 16-gauge bonded wire
- Comes with dust cap for 4-way flat connector
Specs:
- Maximum amperage:
- Stop/turn lights: 2.1 amps per circuit
- Tail lights: 5 amps per circuit
- 1-Year limited warranty
Installation
This custom-fit T-One connector plugs into your vehicle's wiring harness, which is located behind the driver's-side tail light. You will have to remove the tail light assembly to access this harness.
Once installation is complete, the 4-way flat connector will be stowed in the jack storage compartment of your trunk.
You can also route the wiring in the manner shown above to stow the 4-way flat connector beneath your vehicle, near the trailer hitch. A mounting bracket (sold separately) is recommended to keep the connector secure if you are mounting it near the hitch.
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
A tail light converter is built into this T-One 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 your trailer. The tail light 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.
118376 Tow Ready T-1 T-Connector - 4 Wire
Installation Details
This Product Fits The Following Vehicles
- 2001 - 2003 Dodge Caravan
- 2001 - 2003 Dodge Caravan
- 2001 - 2003 Dodge Grand Caravan
- 2001 - 2003 Dodge Grand Caravan
- 2001 - 2003 Chrysler Town and Country
- 2001 - 2003 Chrysler Town and Country
- 2001 - 2003 Chrysler Voyager
- 2001 - 2003 Chrysler Voyager
California residents: click here
Customer Satisfaction Score:
96% were satisfied with this product
4% of customers were not satisfied
- Defective
- Too difficult to install
- Product did not meet expectations
Customer Reviews
T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector - 118376
Average Customer Rating: 4.9 out of 5 stars (198 Customer Reviews)
Quickly and easily install a 4-way trailer connector on your vehicle with this custom wiring harness. T-One connector plugs directly into existing wiring - no cutting, splicing or tapping required. Includes tail light converter.by: Thomas 08/12/2023
It was really easy to install. After taking the taillight out. I removed the jack. I pushed a small single wire through and pulled the harness into the van. Took 20 minutes start to finish.
by: Joseph06/21/2018
2003 Dodge Grand Caravan
Super easy to install on my 2003 Dodge Grand Caravan. I was rear ended in a hit and run on the drivers side so I had to use channel locks to bend the hole open just a touch to let the box in, but again only cause that side of my van is crunched. And I didn't have to pull the plastic plugs out, I just had to take the Seahawks duct tape off and put some new stuff on when I was done. Really easy to install. Just need a drill with a 1/4" bit to install the ground wire. And a knife or scissors.
by: Lee P.02/14/2016
Ordered my T One Wiring Harness on a Thurs evening and received the package Sat in the mail. I went and installed it Sunday. Installation was a breeze especially after watching the installation video on Etrailers website. I highly recommend using Etrailers for your trailer wiring needs and wouldn't hesitate to use them in the future.
by: Kevin 03/19/2024
I love it! It was so easy to connect and all my lights work perfectly.
by: Jan 04/04/2023
My biggest surprise was how this harness was simply a "plug-n-play" installation. All connectors plugged in perfectly for a professional installation. And, it was so excellent to have the video for both the harness and the hitch. Both were actually as easy as it showed in the video. Thank you!
by: Chris 08/15/2023
Instalation was easy and it works great, plug and play.
by: Roland R.07/26/2017
2002 Chrysler Town and Country
I installed this etrailer wiring harness on my 2002 Chrysler Town & Country van. The directions were straightforward and the installation went without a hitch, with all the plugin fittings being well-made. The trailer connection tail piece is long enough so that it can be stored in the jack well on the left side of the van and when in use, is long enough to come out to the center of the tailgate. When I don't need to use it further, I just coil it up and put it back into the jack well. Especially appreciated was the fact that no wire splicing was necessary in the installation.
by: Gary s08/06/2014
I finally had time to install the wiring harness. Paying extra for the simple "Plug and Play" was worth it in the ease of installation and reliability of the in-line plug in. I've installed a few of the traditional harnesses where you splice into the vehicle brake and turn single wires. I've also spent more hours tracing faulty connections. I don't hesitate to endorse this product
over the old method without hesitation.
Gary S.
8/7/2015
The system is still working after being used at least once a week.
by: Thomas05/20/2018
2002 Chrysler Town and Country
I had read the reviews on this wiring harness and thought that this was too good to be true, I was wrong it is very easy to install. I did drill a hole under the carpet to thread the end down to the hitch area, then sealed it up with a waterproof chaulking. Very good product.
Mike L.
5/21/2018
The manufacturer specifically designed the harness so the connector would be deployed from the interior of the vehicle when needed. This way, the connector is protected from damage when its not being used. The rear hatch of your vehicle has weatherstipping thats thick enough that the wire for the trailer connector wont be damaged as long as you avoid the latch area. How youve installed the trailer connector will work just fine for you, but the connector will be exposed to the elements.
by: jeff t 10/06/2014
2003 Chrysler Town and Country
Just have to say e trailer is great! Great price, correct item, fast shipping. Not sure how to rate the product. The same product was originally installed by a reputable professional hitch installer. I have been towing several different trailers without a problem. 5 months go by blew my brake and signal fuses then started to smoke. I'm thinking I left windows open during a heavy rain and the adapter got wet. The installer doesn't think that could happen but so far it has been installed for 2 weeks and no problems. Another note, I had the problem without a trailer attached.
by: Chris M.02/10/2014
2003 Chrysler Town & Country
I Googled "2003 Chrysler T&C trailer wiring" with the following return. "etrailer w/ youtube" clip of installation. Ordered because it was less than $30, plug and play, minimal time, no stripping wire, no soldering, OEM fit. Painless and fast. 4 days later, my two teenage girls installed it in 15 minutes. One small tip. Use a 30 inch piece of safety wire to route the 4 pin socket from the tail-light through the jack well. Plugged it in, light check, hitched up, 100 miles, lots of bumps, no doubts. Winner!
by: Susan07/09/2019
The wiring harness was just what we needed at a lower price than we could find anywhere online! We are now ready to camp with the easy installation! Fast shipping! Thank you!
Susan H.
7/10/2020
Working great after a year 9f use!
by: Charles T11/24/2020
I purchased this wiring harness to go along with a
new trailer hitch which I also purchased. Harness
was recommended for my vehicle by etrailer and
it fit perfectly. Extremely satisfied and happy with
both products which I purchased from etrailer.
by: Nolan B08/09/2013
2001 Chrysler Town and Country
The trailer wiring was a little tricky installing. The ground wire was attached in a different place. Since I used to installed two-way radio's into military equipment it was not hard to figure out another grounding place. The most trouble I had was removing the tail light connector so I could plug in the trailer wiring. Test of trailer lights was right on. Even with the head lights on.
I found a website that showed how to release the connector.
by: Mike S.06/10/2016
2010 Dodge Grand Caravan
I bought this wiring because of the ease of installation. I can't imagine why you would want to splice if a plug in is available for your vehicle. On my Caravan, it plugged into the drivers side tail light and the rest of the wiring stuffed into the hole behind it. I let it drop to the floor and pulled it out from under the side wall. Just hang the end out of the tail gate when you want to use it. The whole thing took about 10 minutes to install. It couldn't get any easier than that. And it works great! I would definitely recommend this product, and etrailer.com.
by: Tom C.08/01/2012
Very easy installation. Wire could be a bit longer. I found it easier to push the trailer end of the wire through the tail light hole from the outside rather than feeding it back from inside to the tail light.
Installation Video would not play all the way through when I went to install (it did previous to me buying the wiring harness).
I have not tried it out yet to see if it works (115 F today in Oklahoma and not going to out to the lake until cooler!! Al Gore is clicking his heels with glee!!). I am a member of the "slow" group as it took me about 45 minutes to do the installation.
by: Doug S.01/21/2014
2003 Dodge Grand Caravan
Good product. This wiring harness makes it a no-brainer to get a 2003 Dodge Caravan trailer ready. My installation required no drilling; only a nut driver and a screw-driver. After watching the very helpful installation video provided by e-trailer.com, the installation took me less than 30 minutes. The only criticism I have towards this is the price. But, this was offset by the time and frustration it saved me to get my vehicle ready for lights at the receiver hitch. Plus, e-trailer shipped this product super fast (and I didn't opt for expedited shipping)!
by: Fausto S.08/30/2015
After one year of installation product started smoking filled up van with electrical fire smell, unit wasn't even plugged into a trailer, poor untested chinese electronics.
On the plus side no one was hurt and my van didn't light on fire.
by: David05/11/2021
Order arrived very quickly. Hitch and wiring harness fit perfectly. Have pulled multiple trailers without problems. Very satisfied with my purchase and with etrailer.
by: Bruce D.05/12/2019
After watching the video, I purchased this wiring harness and everything went together just like THAT! Any company that puts this much effort into explaining a product installation deserves my business for sure. By the way, I used the method of hiding the wires under the bumper instead of going through the jack compartment and found it really easy. I forgot to take pictures as I went along, but it they would look just like the images In the video, it was that accurate!
by: Brian T12/08/2014
2003 Dodge Grand Caravan
Great product,arrived on time and packaged well. e-trailer has everything you need for your trailer,that makes shopping easy. Youtube videos showing me how to install my wiring harness for my 2003 Dodge Caravan,awesome! E-mails and even a personal phone call to make sure that I was happy with my order! Their customer service is why I will do business with them again! You just don't have companies anymore that will take a personal interest in your satisfaction,e-trailer does!
by: John G.05/22/2012
All I have to say is WOW! I searched high and low for this part at all of my local auto parts stores and there was only one who could get it and it was 4 times the price that I paid at e-Trailer. The converter kit along with the how to video on the e-Trailer web site on how to install it was perfect. I had the trailer lights installed in under 10 minutes. I plan on using e-Trailer for ALL of my future parts needs. The company provided plenty of communicaiton from the time the part was ordered through delivery.
Mark me down as an exteremely satisfied customer!
by: Terry B.10/24/2014
2003 Chrysler Town and Country
I installed the trailer wiring harness in less than an hour. Very easy install after watching the video that is linked to the product on Etrailer's site. I spent almost as much time watching the video and rounding up the few tools to do the install. The tools I used were a pair of side cutters, a cordless drill and a rubber mallet to reseat the plastic interior trim. Spend the time watching the video, it is well worth your time.
Thanks Etrailer!
by: Dale08/12/2019
I’m a auto repair owner starting my 40th year. I was looking for a hard to find Hitch and plug and play wiring. A 99 caravan. Not a grand caravan. After relying on my local parts store to order 3 wrong I googled myself and with easy navigation ordered the right one with wiring the first time!! Delivered in 2 days perfect fit. Plug and play wiring everything perfect. My disgruntled customer that had to wait over a week was happy and ready to go camping pulling his pop up. I’ll be ordering all my hitch and accessories from etrailer. Plus I saved [significant amount] which I passed on to my customer. A great experience. Thank you etrailer!!
by: Richard06/16/2021
2003 Chrysler Town and Country
Excellent product. Put a hitch and wiring on my Chrysler Town and Country and there were no surprises. Everything matched up hole for hole and the instructions from the videos were spot on. I've bought from etrailer before for a dodge pickup and it was pretty much the same - everything went in just as advertized.
25
198
Show More Reviews
See what our Experts say about this Tekonsha Custom Fit Vehicle Wiring
- Troubleshooting Trailer Stop/Turn Signals that Work IntermittentlySounds like a ground problem on the trailer. 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 metal surfaces. If there is anything between a light ground and the metal trailer frame or if the trailer has an aluminum frame, tilt bed, or folding tongue, any of these...
view full answer...
- Troubleshooting Malfunctioning Trailer Lights On a 4 x 6 Utility TrailerT-One harnesses are almost impossible to wire incorrectly, so I would say it is most likely somewhere in the trailer wiring. Whichever side, driver or passenger, is having trouble, start at that tail light and work your way towards the vehicle. If the light has a ground wire, make sure it has a good clean ground connection, and make sure it is touching metal and not paint. Some lights are grounded by the bolts or screws that attach the light to the frame, so make sure those are clean...
view full answer... - Troubleshooting a Trailer that Keeps Blowing Left Turn/Brake LightsIt sounds like there might be a short on the left turn/brake circuit of your trailer. That would explain why the bulb went out initially and then why it went out again after you changed the bulb. I would inspect the circuit starting at the trailer connector and go all the way back to the tail light looking for corrosion or exposed wire and fix as necessary. The other thing I would check is the ground of the tail light assembly, bad grounds can cause all sorts of bizarre behavior so I would...
view full answer... - Fuses for Trailer Light and Power Functions in 2014 Jeep Grand Cherokee LaredoI checked the online version of the owner's manual for the 2014 Jeep Grand Cherokee Laredo and according to information starting on page 574 the following fuse positions relate to the various trailer lighting and related circuits. There are multiple circuits relating to trailer lights. The cover of the power box in the engine compartment may also provide details on the appropriate fuses for each of the circuits. F11 30 Amp Pink - Trailer Tow Electric Brakes F28 20 Amp Yellow - Trailer...
view full answer... - Could Black Wire of Trailer Wiring be the Ground WireMost likely that black wire is the ground since it's the only circuit not accounted for and is thicker than the other wires. It's not uncommon for trailer wiring to not be the standard colors. I attached a trailer wiring diagram for you to check out as well.
view full answer...
- Troubleshooting Trailer Wiring That When Connected Blows Vehicle Turn SignalThat's an unusual problem you are having. Most likely it's because your trailer's lighting is drawing too much amperage which is causing the circuit to overload and blow the bulb. Normally this would blow a fuse first but it's possible the bulb could go too. One solution would be to convert your trailer wiring to LED to lighten the amperage draw. I attached a link to this page that has all of the LED trailer lights we offer.
view full answer... - Jeep Gladiator 7 Pin 12 Volt Power Fuse Number and LocationThe fuses F36 and F37 are the ones to look at. These are located in the power distribution box under the hood in the rear passengers side. The likely missing fuse is F37 both both will require a 30 Amp cartridge fuse which will likely be pink.
view full answer... - Will the Trailer Wiring Harness # 118376 Fit a 2002 Chrysler Voyager LXYes, the wiring harness, # 118376, will fit a 2002 Chrysler Voyager LX. I have included a link to a video that shows a typical installation on a similar vehicle and a link to the installation instructions for you to view.
view full answer... - No Power to Trailer Connector on a 2014 Ford F-150I checked the owners manual online for the 2014 Ford F-150 to find all of the fuses and relays related to the tow package wiring. Under the hood in the power distribution box there are several: Relay 6 - trailer parking lamps Relay 9 - trailer battery charge Fuse 17 - brake controller Fuse 21 - power to relay 9 Relay 37 - trailer left turn and brake lights Relay 38 - trailer right turn and brake lights Relay 39 - trailer reverse lights Fuse 43 - power to relay 39 Fuse 67 - power to trailer...
view full answer... - 2002 Dodge Grand Caravan T-One Wiring Harness 118376You will only need one wiring harness for the 2002 Dodge Grand Caravan. This t-one harness connects in one spot behind the driver side taillight assembly. At this point it accesses the passenger side signals before the vehicle wiring goes over to the passenger side.
view full answer... - 2002 Chrysler Town and Country Requires Taillight Converter When Hooking Up 4-Pole Wiring HarnessYour Town and Country would require a taillight converter in order for the trailer lights to function correctly. The trailer wiring combines the right and left directional and brake light signals onto one circuit, one for each side of the trailer. The vehicle carries the brake light and directional signals on separate circuits, therefore simply tapping a 4 pole connector into the taillight circuits would leave your trailer without brake lights. We offer a T-1 Vehicle Wiring Harness, part...
view full answer... - Trailer Lights Do Not Work Correctly when Head Lights are On on a 2004 Ford RangerIt sounds like you are having a ground issue. A bad ground can cause all sorts of problems just like you are describing. Since you have wired the trailer yourself, it should be easy to locate and fix any ground problems. Start at the front of the trailer and make sure the main ground is attached to a clean metal surface. If there is any rust or paint you will not get a very good ground connection. From there, you will need to check the grounds for each of the lights. Most trailer lights...
view full answer... - Trailer Running Lights Not Working On a 2001 Dodge Grand CaravanSince your trailer is working correctly with another vehicle the problem most likely lies in the wiring of the Grand Caravan. Turn the tail lights on and use a circuit tester, item # 3808 if needed, to check the trailer connector. If the taillight circuit is not working, you will need to follow the wiring back into the vehicle until you find the converter, the black box that the trailer wiring is coming out of. Test the brown wire on the trailer side of the converter. If the wire is working...
view full answer... - Trailer Lights on Passenger Side of Trailer Are Dim and Sometimes Go OutIt sounds like you may have a loose or bad connection somewhere in the trailer wiring. I would start by checking the ground wires and make sure they have a good contact to metal and are tight and look over the wires to make sure they are in good shape and not damaged. Another ground point you may want to check is where the light brackets connect to the frame of the trailer, sometimes the connection can corrode or rust where the lights bolt to the frame and will cause a bad ground. Next,...
view full answer... - Troubleshooting Trailer Wiring Harness on 1999 Jeep CherokeeIf you have tested the 4-pole connector on the # 118376 and found that you have voltage at the running light pin but not at the right turn/brake and left turn/brake pin, you will need to troubleshoot the converter box. Have a helper sit in the drivers seat so they can activate the various lighting functions. Test each function on the input side of the converter box. With the right turn signal activated, you should show voltage on the green wire entering the box. The same goes with the...
view full answer... - Troubleshooting Trailer Blinkers that Alternate when Blinker is OnThat is an interesting problem you are experiencing. First thing you want to do is test the 4-way that is installed on the 2004 Xterra for voltage on the correct pins with a circuit tester like # 3808 like the video I attached. If the 4-way test fine then the problem is somewhere in the wiring of your trailer. Since the problem you described would be very difficult to manifest on trailer side wiring I would assume the problem is on the vehicle. The harness wouldn't most likely be the...
view full answer... - Troubleshooting 1990 GMC 1500 that Blows Fuses w Trailer when Running Lights/Brake Lights AppliedSounds like your trailer lights are drawing too much amperage for your vehicle wiring and that is why the fuse is blowing. When your running lights and brake lights are applied the wiring of your trailer is drawing the most it will draw. The easiest way to fix this problem is to replace the incandescent trailer lights on your trailer with LEDs. LEDs draw considerably less than incandescent bulbs so the fuse should stop blowing. I attached a page that has all of our LED trailer lights for...
view full answer... - Which Fuse on 2014 Ford F150 Protects Trailer Running Lamp CircuitsThere is one 20A fuse and one relay in the engine compartment fuse block for the trailer running lamps. The relay is in location # 6, and the 20A fuse is in location # 67. Try swapping an adjacent relay into the # 6 location, to see if that makes a difference. Then, check the fuse in # 67. If it's blown, replace it but before you plug a trailer back in, you'll need to find out why the fuse blew. Examine the trailer connector on the truck, looking for green or white corrosion on the pins,...
view full answer... - Troubleshooting Trailer Lights Not Working When Connected To 2013 Ford F-150Since the tail lights on your trailer do not work when the trailer is plugged into your 2013 Ford F-150 SuperCrew 4WD you likely have a blown or missing fuse(s). I recommend checking that the fuse 73 is installed and isn't blown. This fuse controls the trailer turn signals and brake lights. If your running lights are not working then check that fuse 67 is installed and isn't blown. If both of the fuses check out then I recommend checking that the trailer connector on your truck does not...
view full answer... - Troubleshooting Vehicle Running Light Not Functioning After Trailer Wiring InstallBoth of your vehicle taillights (the circuit on when head lights and running lights are on), are powered by the same circuit. If the T-connector being connected on the # 118376 caused the taillight to go out then I would try unplugging the connector and then replugging it back in as most likely the pins just aren't seated right. Getting this circuit to work right will also most likely allow the taillights of your trailer to start working as well. Running a jumper wire will work as a Band-Aid,...
view full answer... - Troubleshooting 118376 Trailer Wiring Harness Dog Chewed Up WiresIf you have voltage entering but not existing the converter box on the brown wire while the vehicle's headlights or running lights are switched on, then something internally in the converter box has shorted out and your # 118376 T-One Wiring Harness will need to be replaced. I've linked to a video showing the # 118376 being installed, as well as to a help article showing more strategies for troubleshooting trailer wiring harnesses.
view full answer... - Trailer Right Brake Light Goes Out with Left Turn Signal and Brakes OnThis is a text book example of a weak ground. Ground issues normally show up when there is more draw on a system. With a turn signal on and the brakes you are drawing a lot of power and that is when the issue is going to show up. You will want to start by making sure all grounds from the vehicle to each of the lights are attached to clean and corrosion free bare metal surfaces. If you have something grounded at the same location as other items, moving the ground(s) to another location...
view full answer... - Why Does Trailer Wiring for 2001 Dodge Caravan Require Converter BoxThe reason your 2001 Dodge Caravan needs a taillight converter is because it has it's stop light circuit and blinker circuit on separate wires whereas standard trailer wiring has these two circuits combined. So this harness # 118376 combines the circuits like needed and also installs easily on your vehicle since it plugs inline with the factory vehicle wiring.
view full answer... - Troubleshooting Trailer Wiring That Stops Working When Headlights are OnThis sounds like a classic ground problem. A bad or weak ground will show up when there is more load on the system. That is why when you turn the vehicle lights on, the constant draw of the trailer running lights creates more of a load and the bad ground shows up. There are some common places to check for a bad ground. First make sure all of the trailer lights and the main trailer connector are attached to clean and corrosion free bare metal surfaces.
view full answer...
Do you have a question about this Custom Fit Vehicle Wiring?
Info for this part was:
Expert Research:
Mike L
Expert Research:
Sarah L
Expert Research:
Robert G
Expert Research:
Patrick B
Expert Research:
Michael H
Expert Research:
Reno H
Expert Research:
Jameson C
Expert Research:
John H
Expert Research:
Adam R
Expert Research:
Jeffrey L
Video Edited:
Zack K
Video Edited:
Joshua S
Video Edited:
Patrick B
Test Fit:
Nicholas E
Updated by:
Laura H
Updated by:
Wilson B
Updated by:
Alexander C
Updated by:
Isabelle B
Installed by:
Cole B
At etrailer.com we provide the best information available about the products we sell. We take the quality of our information seriously so that you can get the right part the first time. Let us know if anything is missing or if you have any questions.
Product Experts Available Now!
Call 1-800-940-8924
Roland R.
7/26/2018
I have used the etrailer electrical connection with my own small utility trailer during the last year about a dozen times. I have had no problem whatsoever with it. It has always worked as designed.