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FITS 2003 Jeep Liberty
T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector

T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector

Item # 118524

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Custom Fit Vehicle Wiring
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2003 Jeep Liberty

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118524 - 4 Flat Tekonsha Trailer Hitch Wiring
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In Use/Installed


  • Custom Fit
  • Trailer Hitch Wiring
  • Tekonsha
  • 4 Flat
  • Powered Converter
Tekonsha custom fit vehicle wiring for your 2003 Jeep Liberty are available from etrailer.com. Installation instructions and reviews for your Jeep custom fit vehicle wiring. Expert service, and cheapest custom fit vehicle wiring price guarantee. etrailer.com carries a complete line of Tekonsha products. Order your T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector part number 118524 online at etrailer.com or call 800-298-8924 for expert service.


  • All Info
  • Reviews (54)
  • Q & A (69)
  • Videos (2)
  • Photos
  • Why etrailer?

2003 Jeep Liberty - T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector

Quickly and easily install a 4-way trailer connector on your Jeep Liberty 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 Jeep Liberty 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 Jeep Liberty'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 Jeep Liberty'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.


T-One Connection Location Points Behind Tail Lights

Once you've plugged in the T-connector, run the hot lead up to your car battery. Connect the lead to the included fuse holder, and then connect the fuse holder to the positive terminal on your battery and insert the provided fuse.


Once installation is complete, the 4-way flat connector will be stowed beneath your Jeep Liberty, 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 Jeep Liberty'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 Jeep Liberty operate.


With a ModuLite, your trailer's lights will be powered without overloading your Jeep Liberty'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



118524 Installation InstructionsInstallation Details 118524 Installation instructions

Video of T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector


Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.




Video Transcript for Tekonsha Custom Fit Vehicle Wiring - Trailer Hitch Wiring - 118524 Review

Today we're going to be taking a look at the T1 vehicle wiring harness with the 4-pole flat trailer connector. This product fits a 2002 to 2007 Jeep Liberty. It's going to provide your four-way flat connector at the back of the vehicle to power your trainer signal lights. It is compatible with 5-pole, 6-pole and 7-pole adapters. Adapters are sold separately. It's going to come with a dust cap for the four-way flat plug.

That way you can cover up the connection points when the connector is not being used. The black box right here, this is going to be the included ModuLite. This is going to ensure that your vehicle's wiring matches that of your trailers. The powered connects directly to the vehicle battery through the wiring to avoid overloading the vehicle's electrical system. You can see here that we have plenty of wiring so you have plenty of wiring here on the four-way flat side. Plenty of wiring to make all your connections behind the taillights.

It's a pretty simple installation. It's designed to connect quickly and easily. What you'll need to do is locate the connections points behind your taillights and plug in you connectors. The connector with the green wire goes to the passenger side. The connector with the yellow wiring is going to go to the driver's side of the vehicle.

This is a custom-fit harness, so these are going to match up perfectly with the ports on the vehicle, and they're going to snap lock together for a nice tight, secure fit. Once you have those connected, you'll need to make a ground connection. That's your white wire. It has a ring terminal pre-attached to it for easy connecting. You'll get that grounded to a nice clean metal surface with the included grounding screw. Then you need to mount the ModuLite box.

It's going to come with some double-sided adhesive tape. It may have it already installed, if not there's going to be another piece included in the kit. You get that mounted to a nice, clean our-of-the-way location. Then you'll need to run the hot lead to vehicle battery. The hot lead is this red wire coming out of the box. This gets connected to the bundle of black wire with one of the included butt connectors. The other end of the black wire runs to the vehicle battery. It gets another butt connector attached to the end of it. It's going to get connected to one-half of the included fuse holder. The other half of the fuse holder gets a ring terminal attached to it and gets connected to the positive post of the vehicle battery. It's going to come with your 15 amp fuse. It goes directly in here and it's got the fuse cap that closes over to keep that safe and secure. It's going to come with some zip ties, that way you can secure an excess or slack in the wiring that you may. That's going to keep all you wires up and out of the way as you route it from the back of the vehicle to the front of the vehicle. Once your installation's complete, the four-way connector's going to be stowed beneath the vehicle near the trailer hitch. You can loop it around the safety chain loop on the hitch, or you can purchase a mounting bracket to keep the connector secure and easily accessible. Mounting brackets are sold separately. If you're in need of one, you can find it here at etrailer.com. It's also recommended that you use a small amount of dielectric grease on all your electrical connections, like the plugs on the vehicle and the four-pole connector itself. That grease is going to do a great job at preventing corrosion to the connection points. It's sold separately as well and can be found at etrailer.com. When it comes to the maximum amperage for the stop and turn lights, it's 4.2 amps per circuit, and for the taillights it's 7.5 amps per circuit. That's going to do it for today's look at the T1 vehicle wiring harness with the 4-pole flat trailer connector.


Customer Reviews

T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector - 118524

Average Customer Rating:  4.6 out of 5 stars   (54 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.

- 118524
by:
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. 51088



- 118524
by:
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. 88537



- 118524
by:

Installed this harness in my 2007 jeep liberty and in went in as advertized.(No issues) I look forward to doing future business with etrailer, for all my trailer and camper needs. 611128



- 118524
by:
2006 Fleetwood Bounder Motorhome

Works great pretty easy instillation 578284



- 118524
by:
2006 Jeep Liberty

It didn’t last long before it started blowing fuses. 493352



- 118524
by:

Sorry I had forgotten about getting the system. Being I had forgtten it must be working great. 474394



- 118524
by:
2003 Jeep Liberty

I remember it and it worked great. I had put it on a 2003 Keep Liberty. Gave the keep to my grandson last summer. I would gladly buy another system from you if needed. 471786



- 118524
by:

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. 462553



- 118524
by:
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. 436343



- 118524
by:

Customer service was great. When package arrives at home the box was opened and severely damaged. Part was packed in original plastic package inside of damaged box. Overall pleased with service. 361310



- 118524
by:

Easy to install. Priced lower than dealership. Cool people to sp am with and great sense of humor. Thank you. Keep up The good work 358961


Comments

Great

Ypd - 03/27/2018

36500

- 118524
by:

I've been using this product for one year and am happy to report that has always functioned perfectly. 357493



- 118524
by:

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 346513



- 118524
by:

Product fit and installed without a problem and worked as advertised. No issues even after a year of regular use. 305483



- 118524
by:

Great product. Installation went just as described. Worked perfectly the first time, and didn't take very long. 291214



- 118524
by:

Works great! 268167


Comments

Its working fine. Thanks!

Al G - 01/16/2018

33189

- 118524
by:
2006 Jeep Liberty

Extremely easy to install with YouTube video 251627



- 118524
by:
2003 Jeep Liberty

just installed harness. works perfectly. shipping was very quick also. very impressed with seller & product. 206562



- 118524
by:
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! 202883



- 118524
by:
2005 Jeep Liberty

The product fits and works as advertised. Install too about 3 hours. 15-20 minutes for the harness connections and wire routing at rear of my 2005 Jeep Liberty and the rest of the time spent routing and securing the battery wire. That was the hardest part of the install. 193568



- 118524
by:
2006 Jeep Liberty

Works Great Better setup using separate power directly from battery instead of car wiring. 191681



- 118524
by:
2005 Jeep Liberty

Well packed, appears to be of quality materials and everything as needed. Durability - too soon to tell. Install went as expected per very helpful videos. Would recommend. 184039



- 118524
by:
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. 174973



- 118524
by:

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. 156556



- 118524
by:
2003 Jeep Liberty

Fast shipping (on a SUNDAY!!!) easy install, followed the video they had specifically for my Jeep. I will return to etrailer.com for all my other trailer needs! 155919



- 118524
by:
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. 139210



- 118524
by:

Super easy to install, works great 131611


Comments

Its great

Dorin - 05/22/2015

11956

- 118524
by:
Jeep

Excellent product...easy installation for my Jeep. 94848



- 118524
by:
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. 85885



- 118524
by:
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. 84913



- 118524
by:
2006 Jeep Liberty

Easy to follow instructions. The harness was a perfect fit and very easy to install. I would be glad to recommend Etrailer.com 65119



- 118524
by:
2006 Jeep Liberty

I have ordered from etrailer many times now. I have always recieved the correct part and some how it always gets delivered early by at least one day! Thanks for a Great job. 64226



- 118524
by:

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. 62365



- 118524
by:
2007 Jeep Liberty

This product was easy to install and was delivered very quickly. I liked that if there was install issue I could refer to video online @ etrailer for my jeep liberty. 57135



- 118524
by:
2005 Jeep Liberty

Excellent. Exactly what I needed, and had no problem installing wiring. 56491



- 118524
by:
2002 Jeep Liberty

Plugged right in! Couple quirks, needed a Torex 20 screwdriver and used more zip ties than what was included. Also, tried stuffing the control unit into the bumper area before I realized I could just stick it to the light housing itself. Much easier. Net took about 1.5 hours and most of that was crawling under the jeep routing the power line up to the battery. Easy.... 50411



- 118524
by:
2005 Jeep Liberty

Great product and easy installation. The only hard part was getting the wire up through the frame to the battery. 49166



- 118524
by:

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. 49030



- 118524
by:

Shipped quick and installation was easy 47231



- 118524
by:
2003 Jeep Liberty

Generally easy installation. 44573



- 118524
by:
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. 42898



- 118524
by:
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. 38734



- 118524
by:
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) 38702



- 118524
by:
2004 Jeep Liberty

Product works fine so far. Not being mechanically sound kinda guy, it took me awhile to get the power cable to the battery. 38682



- 118524
by:
2003 Jeep Liberty

Watched video on etrailer WEB site for 2003 Jeep Liberty. Installed harness without any problems in less than an hour. DO NOT connect either end of battery wire until you are satisfied with the "run" under the vehicle. 33742



- 118524
by:
2004 Jeep Liberty

The plugs for the taillights are too big for the holes. it is easy to cut and splice them though. Other then that this is a great product and fairly easy to install. 32305



- 118524
by:
2002 Jeep Liberty

Worked perfect on 2002 Jeep Liberty Ren egade 30788



- 118524
by:
2007 Jeep Liberty

etrailer.com is great. Their customer is awesome and so are the products. I installed this on my 2007 Jeep Liberty. The hardest part was running the hot wire from the back to the front. Otherwise, everything was pretty straight forward and easy (instructions included). 24171



- 118524
by:
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. 21848



- 118524
by:

Product shipped fast and was very easy to install. 20493


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Ask the Experts about this Tekonsha Custom Fit Vehicle Wiring
Do you have a question about this Custom Fit Vehicle Wiring?


  • How to Determine if a 2004 Jeep Liberty has a Tow Package to Pick Out Trailer Wiring
  • The 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...
    view full answer...

  • Wiring Harness Recommendation for a 2004 Jeep Liberty Without a Tow Package
  • I verified with my contact at Hopkins that the Hopkins Plug-in Wiring Harness, # 42475, will work on your 2004 Jeep Liberty if it did not come with a tow package. He also stated that the factory connection is typically on the passenger side, but it may be possible that the manufacturer routed the connection to the driver side. I would recommend checking the passenger side for a connector before attempting to connect it to the connector on the driver side. One thing that you will...
    view full answer...

  • Trailer Wiring Harness Options for a 2002 Jeep Liberty
  • Oddly enough a tow package will not necessarily include a trailer hitch. Evey vehicle manufacturer has a different set of components that make up a towing package. The only definitive way to determine if your 2002 Jeep Liberty has a tow package is to have a dealer run the VIN number of the vehicle to tell you what options it has. f you find that your Liberty did not come with the tow package, then it will not be set up from the factory to accept the # 42475 harness. You will instead...
    view full answer...

  • Trailer Wiring Harness on a 2005 Jeep Liberty with Factory Installed Trailer Hitch Receiver
  • If your 2005 Jeep Liberty has the factory tow package there will be a rectangular shaped connector under the rear bumper. I've attached a picture to show you what the connector looks like. If you find it you can install a 4-way and 7-way connector using # 20135. If that connector is not there then you'll need to use a T-One wiring harness like # 118524 which installs behind the tail lights of the Jeep. Then there is a hot lead wire that is run to the battery to power the harness....
    view full answer...

  • No Turn or Brake Signals on Trailer on a Jeep Liberty with Tow Ready Harness 118524
  • The first thing to do is disconnect the trailer from the Liberty. Then using a circuit tester, like part # ALL640595, test each pin of the 4-Way. Clip the alligator clip of the circuit tester to the exposed post, the ground wire. Check each pin with the probe. The brown wire should be running lights. Yellow should be left brake and turn, and green should have the same functions but for the right side. If these functions all work then the problem is on the trailer. If not, then the problem...
    view full answer...

  • How Do You Determine If a 2006 Jeep Liberty Has the Tow Package Wiring?
  • With your 2006 Jeep Liberty, the factory tow package wiring is not easy to distinguish. If you have a factory 7-way that makes it easy as you know that the tow package wiring is there. The main difference between the tow package and no tow package is the wiring for the tow package gives you the rectangular connector under the vehicle that the 7-way # HM42190 plugs into. You can also use the T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector # 118381 which plugs into the...
    view full answer...

  • Plug and Play Trailer Wiring Options for 2005 Jeep Liberty W/O Tow Package
  • We 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...

  • Differences Between Tekonsha Voyager # 39510 and Prodigy P2 # 90885
  • There are a few differences between the two controllers. The Voyager has been around for a looooooooong time. It uses an internal pendulum to determine how quickly the tow vehicle is braking. In order to operate correctly, this level of the pendulum needs to be adjusted. The Voyager also lacks a digital display which makes troubleshooting more difficult. The controller does not provide boost settings and is not compatible with electric over hydraulic braking systems. The Prodigy P2...
    view full answer...

  • Troubleshooting Tail Light and Brake Light Issue When Using T-One Vehicle Wiring Harness # 118524
  • To pinpoint where the problem is actually occurring, I recommend using a circuit tester to check for function at the 4-Way plug on your 2007 Jeep Liberty, without your trailer connected. We offer part # ALL640595, if needed. With a helper in the cab of the vehicle and the tail lights on, check to see if you get a power reading on the yellow and green wire ports when the turn signal is flipped or the brake pedal is pressed, as these would be the turn and brake signal wires. For example,...
    view full answer...

  • How To Connect 4-Pole Flat Vehicle Connector On Jeep Liberty To 5-Pole Flat Boat Trailer Connector
  • On 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...
    view full answer...

  • Recommended Trailer Wiring Harness for 2005 Jeep Liberty
  • Of 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...
    view full answer...

  • Trailer Wiring Harness Recommendation for a 2005 Jeep Liberty
  • If your 2005 Jeep Liberty has a factory tow package, you could use either the Hopkins harness, # 42475, or the Tow Ready harness, # 118381. The vehicles with a tow package have a factory connector made to add a wiring harness. Both products will perform equally as well. But if your Liberty did not come with a tow package, you will need to use Tow Ready Custom Fit Vehicle Wiring, # 118524. This is a circuit protected powered converter which is required to protect the sensitive electrical...
    view full answer...

  • Brake Controller Recommendation for a 2004 Jeep Liberty
  • Brake controllers are not vehicle specific so any brake controller we carry can be installed on your Jeep Liberty. Along with a brake controller you will need a Brake Controller 7 and 4 Way Installation Kit, item # ETBC7, or item # ETBC6, because your vehicle does not have factory wiring installed for a brake controller. You will also need a working 4-Way trailer connector either item # 118524, if you do not already have one. I have posted a link below to an FAQ article and a video...
    view full answer...

  • Instructions for Trailer Wiring Harnesses for a 2006 Jeep Liberty
  • Yes, the instructions are on the product pages, right hand side of the page, across from the description. I have included a link to them here for you as well. If we have installation instructions for a product, this is the location they will be. We also have a similar Tow Ready wiring harness, # 118524. I have linked its instructions as well and a video showing a typical installation on a 2006 Liberty.
    view full answer...

  • Recommended Trailer Wiring Harness For 2004 Jeep Liberty
  • The wiring harness I recommend for your 2004 Jeep Liberty is the T-One Vehicle Wiring Harness, part # 118524. This harness simply plugs into the Jeep wiring located behind the tail lights. You will then run the hot lead up to the vehicle battery. I have attached a link to an installation video for this harness on a liberty you can check out. When working with electrical connectors I recommend using dielectric grease like part # 11755. This keeps dirt and moisture out of the electrical...
    view full answer...

  • Trailer Wiring Options for a 2006 Jeep Liberty without Factory Tow Package
  • There are a few different trailer wiring harnesses available for the 2006 Jeep Liberty without the factory tow package. I have included a link to them for you. I recommend either # 118524 or # C55382 because they plug in line with the tail light wiring on the vehicle. These are the harnesses that fit because the vehicle does not have the factory tow package. Models with the factory tow package are pre-wired with a trailer connector already and the wiring for it is under the vehicle.
    view full answer...

  • Trailer Wiring Recommendation for a 2004 Jeep Liberty
  • The difference between the Curt Wiring Harness # C55382 and the Tow Ready Custom Fit Vehicle Wiring # 118524 is basically just the brand. Both of these products will install the same and will perform the same functions. I usually recommend the Curt harnesses because they use a newer style of circuitry that has proven to be more reliable. Also, you will need to run the power wire to the battery otherwise the harness would not work. The reason for the power wire is to prevent overdrawing...
    view full answer...

  • Troubleshooting Smoke and Melting Trailer Wiring on a 2002 Jeep Liberty After 4-Way Install
  • Most likely the problem you described is from a short on the trailer wiring. Running a powered converter is a great idea as it protects the taillight circuits of the vehicle it is installed on. But if you are seeing smoke, melted wire, and fuses blowing immediately the problem is a short somewhere on the wiring that is WAY overdrawing the circuits. If the smoke started after plugging the harness into your trailer then the problem is the trailer wiring, if the smoke started after plugging...
    view full answer...

  • Troubleshooting No Left Turn Signal on T-1 Wiring Harness for a 2006 Jeep Liberty
  • If you are checking the harness, item # 118524, without the trailer hooked up and there is no power on the yellow left turn circuit coming out of the converter, then you will need to check the ground wire on the vehicle and be sure it is securely connected to a good ground point. Then check the connectors behind the taillights and be sure they are securely connected. If all checks out then your converter has shorted out somehow and will need to be replaced. If you are checking the yellow...
    view full answer...

  • Where are the Connection Points to Install a Trailer Wiring Harness on a 2004 Jeep Liberty
  • The connection points for Trailer Wiring Harness, # 118524, for the 2004 Jeep Liberty are located behind the vehicle tail lights. The connection points and converter will be inside of the vehicle when installation is complete. The 4-Way will be under the vehicle and you can use a mounting bracket, like # 18144. I have included a link to the installation instructions for the wiring harness for you to view.
    view full answer...

  • How to Select Correct Wiring Harness for 2006 Jeep Liberty
  • A 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...
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  • After Dealer Replaced Trailer Hitch on 2006 Jeep Liberty it Started Blowing Fuses
  • To determine if it is the wiring harness on your 2006 Jeep Liberty that is causing the problem you can perform some tests. Basically you would use a circuit tester such as # ALL640595 and test the wires going into the wiring harness converter box and the wiring coming out of the box. It helps to have someone in the vehicle to operate the lighting functions while you test the wires. If the converter box is not receiving the correct signals going into it from the vehicle then there is...
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  • How to Pick Trailer Wiring Out for a 2004 Jeep Liberty
  • Like you said there are two different trailer wiring options for your 2004 Jeep Liberty that does not have a 7-way. The Tow Ready kit part # 118524 requires a wire to run up to the positive post of the battery and the Curt # C55382 does not. The benefit to running the wire up to the battery is that it protects the tail light circuits of your vehicle. Instead of drawing the amperage required to power the trailer lights from vehicle taillights the amperage comes straight from the battery...
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  • Wiring Harness Recommendation For 2006 Jeep Liberty Without Factory Tow Harness
  • The Hopkins Plug in Adapter, part # 42475, is not designed to work with your 2006 Jeep Liberty, but we do have a solution that will work for you. For your Liberty, you will need to check to see if your vehicle has the necessary connector and if it is active. You would need to locate the connector at the rear of the vehicle that should be near the drivers side frame rail by the spare tire. You can use a circuit tester like part # 3808 to test the pins of the connector for the various...
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  • Recommended Trailer Hitch for a 2004 Jeep Liberty
  • All of the hitches we currently offer for a Jeep Liberty will fit years 2002-2007 and no other vehicles. The trailer hitch I recommend for your 2004 Jeep Liberty is the Draw-Tite part # 75128. It's a Class-III with a 2-inch receiver. The maximum gross trailer weight is 5,000 pounds and tongue weight capacity is 500 pounds. If you plan on doing any towing, the wiring harness kit you need is the Tow Ready # 118524. Or if you already have a factory tow package then go with Hopkins custom...
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  • Troubleshooting Turn Signal Fuse Blowing on 2005 Jeep Liberty
  • The turn signal fuse blowing will be either due to a bad ground wire connection on your turn signals or a short in the wire. I don't believe that the wiring harness would cause that issue, but you may want to check the ground wire on that to make sure you have a clean bare metal to metal connection there as well. I recommend unplugging your # 118524 harness from behind that tail light and seeing if that fuse blows without the connection. If so, then you know the short is on the vehicle...
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  • Recommended Trailer Wiring Harness Options for 2002 Jeep Liberty
  • If you're comfortable with the process of using a circuit tester like # 40376 to locate which circuit serves which taillight function, and then tapping the input wires for the Hopkins # HM48915 taillight converter into those circuits, you can certainly use that option. This being said, the Curt # C55382 converter would be a plug and play option that would be much easier to install. Better still would be the Tow Ready # 118524. The Tow Ready is also a plug and play option, but instead of...
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  • Troubleshooting A T-One Wiring Harness On a 2005 Jeep Liberty
  • It sounds like you have a dead short on the tail light circuit that is contacting the left blinker circuit in the converter box on your Liberty. I would use a circuit tester, item # ALL640595 if needed, and check the wiring going into the converter box on the T-One wiring harness, after reconnecting the harness. You should have 5 wires to test (see video). The red wire should have power when the brake pedal is depressed. The green wire should have intermittent power when the right turn...
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  • 6 and 7-Way Trailer Connector Mounting Box Recommendation for Draw Tite Hitch on 2004 Jeep Liberty
  • I spoke with my contact Draw-Tite and he informed that the cross tube is 2-1/2 inch by 2-1/2 inch. Because of this I would recommend you use a 6 and 7-Way Trailer Connector Mounting Box # 18156. I attached installation instructions and an installation video for the # 75128 for you to check out also. To complete your towing setup you may be interested in the following products: etrailer Ball Mounts # EBMK2EL Tow Ready Custom Fit Vehicle Wiring # 118524 (installation instructions) Brake...
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Info for this part was:

Photos by:
Theodore B
Expert Research:
Jackie C
Video by:
Andrew K
Expert Research:
Michael H
Expert Research:
Jameson C
Video Edited:
Joshua S
Test Fit:
Nicholas E
Test Fit:
Rick A
Expert Research:
Adam R
Updated by:
Laura H
Installed by:
Cole B
Expert Research:
Jeffrey L
Video Edited:
Sue W
Updated by:
Sarah W
Photos by:
Jeffrey L

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