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2021 Ram 3500
T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector
Item # 118524
Retail:$118.10
Our Price: $70.07
You Save: 41%
2021 Ram 3500
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- Reviews (78)
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Tekonsha Custom Fit Vehicle Wiring - 118524
- Custom Fit
- 4 Flat
- Trailer Hitch Wiring
- Tekonsha
- Powered Converter
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. Powered ModuLite reduces strain on wiring system.
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 ModuLite 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 of 16-gauge bonded wire
- Comes with dust cap for 4-way flat connector
Specs:
- Maximum amperage:
- Stop/turn lights: 4.2 amps per circuit
- Tail lights: 7.5 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 and passenger's-side tail lights. You will have to remove the tail light assemblies to access this harness.
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 and insert the provided fuse.
Once installation is complete, the 4-way flat 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.
ModuLite Powered Tail Light Converter
A ModuLite power module 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. This power module functions as a tail light converter to combine 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.
With a ModuLite, your trailer's lights will be powered without overloading your vehicle's electrical system. Because the module draws power directly from your car's battery and bypasses the electrical routes that are used by a basic wiring harness, there is virtually no draw on your tail light circuits.
118524 Tow Ready T-1 T-Connector - 4 Wire - Modu-Lite
Installation Details
This Product Fits The Following Vehicles
- 2002 - 2007 Jeep Liberty
- 2002 - 2007 Jeep Liberty without factory Tow Package
California residents: click here
Customer Satisfaction Score:
98% were satisfied with this product
2% of customers were not satisfied
- Wrong item was ordered
- Defective
Customer Reviews
T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector - 118524
Average Customer Rating: 4.7 out of 5 stars (78 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. Powered ModuLite reduces strain on wiring system.by: Skip S.06/30/2019
Has worked perfectly on my 2007 JEEP Liberty, hooks up to the standard
trailer plug and works great. Made 4 trips with a trailer in tow, absolutely perfect function for lights.
Installation was a breeze, I watched a few install videos. I did a few more steps than one would expect, mostly to secure the module into the chassis cavity of the left rear light cluster, and the B+ BLACK wire connected to the yellow fuse clip, and then the car battery POS terminal.
The mounting bracket was attached to the chassis with the included screws, BUT I drilled and then tapped the holes (were they 8-32 or 10-32 ? ) to screw the bolts directly into the chassis.
Gooped the bolts with a gel lithium grease for rust protection when I screwed
them into the chassis metal.
Suggections! Please replace the black B+ positive wire with a RED color insulation
wire, to maintain correlation with standard DC color coding for wiring.
Add a good 12-14AWG yellow jacket butt splice to the kit for the BLACK B+ positive
wire to the YELLOW fuse clip wire. I had to use one of my own stock, the butt splice you sent would not accept the 12 gauge wire.
Thanks guys! Highly recommend this kit for a 2007 JEEP Liberty.
by: Dave 03/28/2024
The service was great. Thank you Dave and the crew at etrailer.
by: David 08/07/2022
2002 Jeep Liberty
Easy installation, works great!
David
8/8/2023
After 1 year, I still use my trailer nearly every week. Thankful for this harness kit@
by: Theodore03/31/2022
Insructions were clear. Everything I needed was in the kit. Works perfectly.
Theodore B.
6/13/2023
Works perfectly
by: CR07/09/2013
2018 Jeep Liberty
I purchased a trailer hitch for a Jeep Liberty about 18 months ago. Installation was simple with the instructions provided with the hardware and the videos on this site. I would encourage others to heed their warning that corrosion and rust should be removed from the holes on the vehicle before installing a hitch. Anyway, not only did the site contribute to simple installation, but their customer service was excellent. I received my hitch sooner than expected, which was beneficial because I needed to use it quickly. The whole system has been working great for this entire time. I have no complaints and will continue to use this site.
by: Mike 09/11/2022
The vehicle specific kit was relatively easy to install. it works great and when we had issues with the wiring harness collar coding Customer Service was right there to walk us through the install.
by: Peter Pandolfi01/02/2013
My experience with etrailer.com was a great one. The sales rep. Rebecca N. was so delightful and knowledgeable. She walked me through the entire process right down to installation. Installing the hitch and wiring harness was simple. Thank you Rebecca and etrailers.com!
I will refer and do business with etrailer.com in the future.
by: Gary 06/16/2023
Still works well
by: Art W.06/25/2013
Jeep
Hitch and wiring was ordered on Monday am, was at my door Wednesday 6pm. Very easy installation, good product. My only problem was that the bolts supplied with the hitch did not fit my Jeep. I had to go to the local hardware and buy 6 grade 8 bolts in the proper size, at 79 cents apiece.
I cleaned the nuts with a tap, still the provided bolts would not fit, but the ones from the hardware screwed right in. I did read the reviews on your site for this hitch, others have had the same problem.
That said, I would do business with e-trailer again.
by: Ron K.04/29/2012
2007 Jeep Liberty
Very easy installation on my 2007 Jeep Liberty Sport. I ran the wire from the battery underneath the vehicle along the same route as the rear brake lines up and over the rear axle and then to the trailer wiring harness.
by: Ben H06/12/2015
2003 Jeep Liberty
Works great on my 2003 Jeep Liberty.
Installation was very easy - other than running the power wire through the frame to the battery. The posted video was very helpful in figuring out the routing for that wire.
This was my first etrailer.com order and I am incredibly impressed by how complete and helpful the site has been - thanks!
by: Joe W.06/17/2013
2006 Jeep Liberty
Very satisfied with the product and the service.
Installation was very close to the video instructions.
The only thing keeping this from getting the highest mark: the wire loom and self tapping screw called for in the installation instructions for the black power wire were not included in the package, that required a trip to the store.
by: JM-TN08/09/2012
2005 Jeep Liberty
It seems bizarre that you write a review about somebody doing exactly what they said they would do for you. Well, my experience has been horrible with customer service in the last 5 years. Then along comes e-trailer. I ordered the part and it shipped the same day. I had a confirmation email letting me know what part was on the way along with the tracking info. I had an email letting me know it was delivered to my house. Installation was a snap with best directions I have used in a long time. This was a great experience and it was handled with best customer service experience in years. Thank you e-trailer.
by: David L09/25/2017
2004 Jeep Liberty
The product has been working very well for over a year now, towing my boat and trailer without difficulty or problems. I'm very pleased with the price and performance of the product. Thanx.
by: tbjones02/27/2017
I purchase three hitch s from your company EZ to install now with the purchase of the wiring harnes theis wil fourth purchase very ez to run and attach I hope is well be my last ,if not I'll be back GREAT PLACE TO DO BUSINESS JAMIE made purchase EZ alway RIGTH the frist Time love place
by: Jim04/28/2012
2007 Jeep Liberty
Fit really well. Went to auto store in town first and was given the wrong part. E-Tailer got it correct first shot. Running power wire to front was a pill but works well. Thanks for your trouble.
Jim (07 Jeep Liberty)
by: J Romo02/16/2015
2003 Jeep Liberty
I have multiple trailers jet ski, boat, utility, rv etc. etrailer.com is my go-to shop for my trailer maintenance needs.
etrailer understands no nonsense customers requiring real customer service. This is a rare business attribute nowadays.
by: H08/29/2022
The instructions were just the right amount of detail and all the parts plugged right in to my old truck.
by: John N10/17/2014
Product came as described. Easy to install. Really like the YouTube videos to help with the install. Most time consuming part was running the wire to the battery. Very Satisfied and much better than splicing wires.
by: Robert 06/05/2012
2006 Jeep Liberty
Replaced a unit that stopped working and that did not take power from batery. Unit was just a matter of connecting 4 connectors and running a wire forward to the batery. No problems and unit works good.
by: Vincent07/23/2012
This isn't my first installation of wiring for a trailer but this kit covered everything. I've never had to run the wiring to the battery but it all worked out and it's working beautifuly.
by: James12/24/2017
The product was easy to install. For the user, it would be better if the 12volt wire were rolled instead of folded. It wanted to stay in a knot when trying to thread it through the vehicle.
by: Kevin S08/14/2019
Good service ...great product...slapped it in and
off I went...no problems and will call on you again if need something
by: T-Connector #11852408/14/2011
Jeep
Shipment arrived a day early, very easy to install. This is to replace one I bought from a different company and it burned out in a year. The quality of this T connector appears to be superior to the one I had. A tad bit more expensive then the old one (about $20.00 more), but a real bargain compared to the $180.00 Jeep wants for theirs.
by: Keith H07/04/2014
2006 Jeep Liberty
Nothing to say that hasn't already been said about this product and service...delivery-faster than expected...ease of use-installs EXACTLY and as EASILY described in video...so buy the dang thing. Worth the money for an easy reliable installation.
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Show More Reviews
See what our Experts say about this Tekonsha Custom Fit Vehicle Wiring
- Recommended Trailer Wiring Harness for a 2006 Jeep Liberty without Factory Tow PackageFor your 2006 Jeep Liberty that does not have the factory tow package you can use trailer wiring harness # C55382 or # 118524. Both install the same way. I have linked a video to the right showing installation for you.
view full answer... - Will Wiring Harness from 2008 Jeep Liberty Work on 2005 Jeep LibertyI do have the wiring harness you need for your 2005 Jeep LIberty, however the harness you currently have that is designed for a 2008 Jeep Liberty will not work. This is because there was a generational change for the Liberty starting with the 2008 model year. There were enough changes with the electrical system on the vehicle that a new custom trailer wiring harness was required starting with the 2008 model, one that will not fit or work on previous model year vehicles. Your best option...
view full answer... - 4-Way Trailer Connector for 2002 Jeep LIbertyWe do have 4-way trailer connectors you can install on your 2002 Jeep Liberty, with the correct one depending on if you have the factory tow package or not. If you do have the factory tow package on your 2002 Liberty, the correct 4-way harness is the Hopkins Plug-In Simple Vehicle Wiring Harness with 4-Pole Flat Trailer Connector # 42475. If you do NOT have the factory tow package on your Jeep, the correct 4-way harness is the T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector...
view full answer... - How to Determine if a 2004 Jeep Liberty has a Tow Package to Pick Out Trailer WiringThe most efficient way to determine if your vehicle has the tow package is to take your VIN number to a Jeep dealer and have them run it. They will be able to tell whether or not you have the tow package with that information. Or you could check the wiring in your vehicle to see if the correct connectors are present on your vehicle. Check out the installation instructions I attached that will show you how to access the area. If you have the tow package, or if you find the harness then...
view full answer... - Why Does Trailer Wiring Harness for 2007 Jeep Liberty Require Converter BoxThe reason you can't wire a 4-way directly to the taillight wiring of your 2007 Jeep Liberty is because your vehicle has the stop lights and turn signals on separate bulbs which trailer wiring has these circuits on combined bulbs. That's why you need a kit like the part # 118524.
view full answer... - 2006 Jeep Liberty Brake Control Parts and Install RecommendationYou would need to convert the 4-way to a 7-way so that you can install the brake controller. For that you will want the Brake Controller Install Kit and 7-Way Adapter part # ETBC7. I attached installation instructions and an install video for this product as well. For a brake controller I would recommend the Prodigy P2 Brake Controller part # 90885. This is our best selling brake controller because of how well it works and how easy it is to setup.
view full answer... - Recommended Wiring For Trailer When Tow Bar Wiring Is Present At Tail LightsFor your 2007 Jeep Liberty, if you have a t-connector harness like the T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector # 118524 which connects behind the driver and passenger side tail lights as you mentioned you will not be able to connect the trailer and the tow bar wiring simultaneously. I've attached a video that shows how we run the wiring behind the rear bumper from side to side and how we run the power to the battery through the frame. You do have another option...
view full answer... - Trailer Wiring Harness Recommendation for 2005 Jeep Liberty RenegadeThe wiring harness I recommend for your 2005 Jeep Liberty Renegade is the TowReady # 118524 because this particular 4-pole wiring kit offers the highest current output capacity. That means your trailer's lights will be brighter and you'll be less likely to have any overload issues. This wiring harness simply plugs in to your Liberty's tail lights, as shown in the linked video, and you'll have to route and splice only one wire. That wire routing process is outlined in the linked article.
view full answer... - Trailer Wiring Recommendation for 2002 Jeep LibertyI have an easy to install trailer wiring harness that is a fit for your 2002 Jeep Liberty but it's not one that installs with a single connector that attaches at the rear of your vehicle. Instead you would want the Tekonsha kit part # 118524 which is a confirmed fit for your vehicle and plugs inline with the taillight connectors of your vehicle. I attached an install video for you to check out as well.
view full answer... - How To Connect 4-Pole Flat Vehicle Connector On Jeep Liberty To 5-Pole Flat Boat Trailer ConnectorOn your 2006 Jeep Liberty the Tow Ready T-One Wiring Harness, # 118524, is the correct wiring harness. Using the Tow Ready Adapter 4 Pole to 5 Pole Trailer Wiring Adapter, # 20036, will work on your vehicle to give you the adapter to plug into your trailers 5-pole connector. That would be everything you need, no other wiring or adapters. The 5-pole connector on the Tow Ready adapter will plug into your boat trailers 5-pole and the other end will have a 4-pole connector that will plug into...
view full answer... - How to Select Correct Wiring Harness for 2006 Jeep LibertyA local Jeep dealership can run your Liberty's VIN through their computer to tell you if it was equipped with a factory tow package, but you can also just check under the rear bumper to see if there is a wiring connector that looks similar to the one shown in the linked photo. This image shows male/female connectors included with 4-pole harness part # 42475. The 7-way harness # HM42190 also uses a rectangular OEM connector. Both of these harnesses are for tow-package-equipped vehicles. If...
view full answer...
- The Best Trailer Wiring Recommendation for a 2004 Jeep LibertyFor your trailer you would probably be fine using Curt trailer wiring harness # C55382 on your 2004 Jeep Liberty. This harness is rated for 3 amps per circuit for stop and turn signals and 5 amps for tail lights. This is most likely plenty for your trailer. If you wanted to be certain though you would need to determine how much amperage each light draws using a meter such as # PT89ZR. Using a powered converter, # 118524, would be the best option though no matter what the situation is because...
view full answer... - Trailer Wiring Recommendation for a 2006 Jeep LibertyIf you do not already have a trailer connector installed, your vehicle was most likely not factory pre-wired. That is not necessarily bad news, we offer a T-1 Connector, part # 118524 for your Jeep Liberty. The harness plugs in line to existing wiring behind the tail light assemblies and requires a connection to the positive battery terminal. This circuit protected powered converter will protect the vehicles sensitive wiring. I have included a link to the installation details for you. If...
view full answer... - Installing Tekonsha Voyager Brake Controller Part # 39510 on a 2007 Jeep LibertyI would be happy to walk you through the process. First of all, you will need a 4-pole trailer wiring harness, part # 118524 if your Liberty does not already have one. You will then need our Brake Controller Install Kit, part # ETBC7 for a 7-way trailer connector, or # ETBC6 for a 6-way connector. The install kit includes all wire, connectors and circuit breakers necessary for the installation. The kit includes a trailer connector adapter that plugs into the 4-pole harness. At this point,...
view full answer... - How to Convert a Tow Ready Wiring Harness 4-way to a 7-WayThere are products available that will convert the 4-way that is on the Tow Ready Modulite # 118524 to a fully functioning 7-way. You would want a 4-way to 7-way Adapter part # ETBC7. The # ETBC7 comes with everything you would need to have a fully functional 7-way at the rear of your vehicle as well as allow you to use a brake controller. Basically, you will plug the 4-way of the # 118524 into the # ETBC7 and then run a few wires and the installation will be complete. Check out the...
view full answer... - Recommended Trailer Wiring Harness for 2005 Jeep LibertyOf the three harnesses you mentioned, the # 118381 wouldn't work unless your Liberty has the OEM 7-way connector. The # 118381 would plug inline between the 7-way connector and the vehicle wiring harness. If your Liberty does not have the factory 7-way, your choices would be between the Tow Ready # 118524 and the Curt # C55382. Both harnesses would install in the same manner, plugging inline at the point where the taillight assemblies plug into the vehicle wiring. I'd recommend the Tow...
view full answer... - Plug and Play Trailer Wiring Options for 2005 Jeep Liberty W/O Tow PackageWe do indeed have two plug and play trailer wiring harness options for your 2005 Jeep Liberty. If your trailer has minimal lighting- just a stop/turn/tail light for the passenger and drivers side, the Curt # C55382 would be an excellent choice. This harness has a simple installation, which would plug inline with the connectors on the back of the taillight assemblies. If your trailer has more extensive lighting, say what is mentioned above plus some clearance and/or marker lights on the...
view full answer... - Trailer Hitch Receiver Fit for 2004 Jeep LibertyYes, we do have a trailer hitch receiver that is a fit for your 2004 Jeep Liberty, and what you will need is the Draw-Tite Max-Frame Trailer Hitch Receiver # 75128. Draw-Tite makes the highest-quality trailer hitches, and this is a bolt-on installation that won't require drilling into your Jeep's frame so it's the perfect option for you. If you also plan on doing some towing with your Liberty and need a trailer wiring harness, the correct fit is the T-One Vehicle Wiring Harness with...
view full answer... - Routing a Power Wire for a Trailer Wiring Harness on a 2002 Jeep LibertyThe only other trailer wiring harness available for a 2002 Jeep Liberty is # 42475 and it will only work if the vehicle came with a factory tow package. For all other models, you need to use the T-Connector harness, # 118524. Running a power wire to the battery is required because it provides the power to the trailer lights while at the same time protecting the wiring on the vehicle. The connection is required or the harness will not work. Routing the wire to the battery is not difficult...
view full answer... - No Power To 4-Way With Curt T-Connector Vehicle Wiring Harness On a 2003 Jeep LibertyThere are only two possible issues that could cause the Curt T-Connector Vehicle Wiring Harness part # C55382 which is a fit for a 2003 Jeep Liberty not to function correctly. The first is that the pins inside each of the t-connectors are not perfectly seated whether that be from the pins being bent or just not fully engaged so be sure to check that. The next is as you mentioned a bad ground. Please note, you need bare metal contact with the ground wire so be sure you have sanded some of...
view full answer... - Recommended Trailer Wiring Harness for 2012 Jeep LibertyThe wiring harness # 118524 is not a fit for your vehicle but does still require the 12V power wire. The correct fit for your 2012 Jeep Liberty is the T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector # 118554. This harness will connect to the factory wiring behind your tail lights on each side and will require the 12V power from your battery. By drawing power directly from the battery it protects your vehicle from circuit overload and damage to your electrical components....
view full answer... - Will The Hitch From A 2000 GMC Jimmy 4X4 Fit A 2003 Jeep LibertyThe Trailer Hitch, # 87520, has been replaced with the Draw-Tite Trailer Hitch, # 75186. The vehicle applications for the Draw-Tite , # 75186, is for 1988 to 1997 Nissan Pickup, 1998 to 2004 Nissan Frontier Pickup. It does not list it as fitting a 2000 GMC Jimmy 4X4 and it will not fit a 2003 Jeep Liberty. For the 2003 Jeep Liberty you would need the Draw-Tite Trailer Hitch, # 75128. It is a 2 inch Class III hitch with a 5,000 lbs. towing capacity and a 500 lbs. tongue weight capacity....
view full answer... - 2011 Jeep Liberty Factory Tow Package Wiring Stopped Working After a Short CircuitOn the 2011 Jeep Liberty with factory tow package there are fuses for the wiring in location M2 and location M4. If those are good then you can inspect the actual trailer connector and wiring going to it to see if the short caused significant physical damage causing the problem. If it is neither the fuses nor the wiring/connector then there is likely a deeper issue, possibly related to the vehicle computer. Since it is OEM tow package wiring the best thing to do in that situation is to...
view full answer... - Recommended Wiring Harness for 2006 Jeep Liberty Towing Utility TrailerI'm not entirely sure which you were comparing but the main difference is whether or not you have the factory tow package on your 2006 Jeep Liberty. If you are comparing brands, then Tekonsha is the way to go. We have found their wiring to be the most reliable by far. Troubleshooting a wiring issue is never fun, so I always recommend the most reliable option. We have the following available from Tekonsha: -T-One Vehicle Wiring Harness # 118524 (If you do not have the tow package) -T-One...
view full answer...
Do you have a question about this Custom Fit Vehicle Wiring?
Info for this part was:
Expert Research:
Jackie C
Expert Research:
Michael H
Expert Research:
Jameson C
Expert Research:
Adam R
Expert Research:
Jeffrey L
Video by:
Andrew K
Video Edited:
Joshua S
Video Edited:
Sue W
Test Fit:
Nicholas E
Test Fit:
Rick A
Updated by:
Laura H
Updated by:
Wilson B
Updated by:
Alexander C
Updated by:
Isabelle B
Installed by:
Cole B
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Skip S.
7/2/2020
Still working perfectly. Has not been a problem. I did tell a fellow Jeep Liberty owner about the availability of the kit. I shall definitely return for any more products for my Jeep. Big Thank you !!