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  1. Custom Fit Vehicle Wiring
  2. Tekonsha
  3. Custom Fit
  4. 4 Flat
  5. Trailer Hitch Wiring
  6. Powered Converter
THIS ITEM IS NOT A FIT FOR
2005 Chevrolet Colorado

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

Item # 118524
Retail:$118.10
Our Price: $70.07
You Save: 41%
Custom Fit Vehicle Wiring
Not Confirmed to Fit

2005 Chevrolet Colorado

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Shipping Weight: 1.8 lbs
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Custom Fit Vehicle Wiring 118524 - Powered Converter - Tekonsha
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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. 1-800-940-8924 to order Tekonsha custom fit vehicle wiring part number 118524 or order online at etrailer.com. Free expert support on all Tekonsha products. Great prices and Fastest Shipping for T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector. Custom Fit Vehicle Wiring reviews from real customers.
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  • Reviews (78)
  • Q & A (0)
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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.


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 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 118524 Installation instructions

This Product Fits The Following Vehicles



California residents: click here


Customer Satisfaction Score:


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:

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.

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 !!



by:

The service was great. Thank you Dave and the crew at etrailer.



by:
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:

Insructions were clear. Everything I needed was in the kit. Works perfectly.

Theodore B.

6/13/2023

Works perfectly

Etrailer Expert

Mike L.

9/6/2023

@TheodoreB We're glad to hear that the # 118524 harness is working well for you!


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.



by:

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:

Still works well



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.



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.



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!



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.



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.



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.



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.



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



by:

The instructions were just the right amount of detail and all the parts plugged right in to my old truck.



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)



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.



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.



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.



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.



by:

Good service ...great product...slapped it in and
off I went...no problems and will call on you again if need something



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.



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.



by:
2002 Jeep Liberty

It is a good kit. The instruction is pretty clear and the online video are helpful. The only issue I saw was that both the instruction and the video indicate that the lead line for the positive end at the battery is red, which it clearly is not in the kit that I received; it was black. In total it took about an hour to fully install with the help of the video.


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Show More Reviews

See what our Experts say about this Tekonsha Custom Fit Vehicle Wiring

  • 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...
    view full answer...
  • Recommended Trailer Wiring for 2007 Jeep Liberty
    For your 2007 Jeep Liberty, many people have a receiver for a bike rack or cargo carrier and have not added the trailer wiring which sounds like what you are finding. If your vehicle has the factory tow package, the harness you will need to connect to is found under the vehicle in the center behind your hitch receiver. If you have that tow package then you can simply use the Tekonsha # 118381 for a 4-Way or # 20135 for a 7-way. You may still need to add # 5506 on some models for 12v...
    view full answer...
  • 2006 Jeep Liberty Brake Control Parts and Install Recommendation
    You 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 Harness for 2003 Jeep Liberty
    Yes, Hopkins 4-pole trailer wiring harness # 42475 is a confirmed fit on the 2003 Jeep Liberty and is one of the three such wiring products we offer for your Jeep. However, based on our experience with all the brands of wiring products we have for your Liberty I do recommend a different option, the T-One Vehicle Wiring Harness # 118524 from Tekonsha. I recommend this product over both other options (all are shown on the linked page) because we know Tekonsha products to be very reliable...
    view full answer...
  • Parts Needed for Towing a Trailer With Brakes for a 2005 Jeep Liberty Limited
    You will need wiring and a brake controller in order to tow a trailer with brakes. If your Jeep Liberty does not already have a 4 way connector on it, you'll need to start by adding that with the Tekonsha # 118524. I recommend using the Tekonsha over the other available harnesses because we've found that the converter boxes are a bit more reliable over time, so it's a great choice. Once you've added your 4 way you'll need to install a 7 way connector with the # ETBC7, which will allow you...
    view full answer...
  • Trailer Wiring Harness Recommendation for 2005 Jeep Liberty Renegade
    The 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...
  • 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...
    view full answer...
    Image 1 for
  • 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 # PTW2993 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 some...
    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...
  • 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 is...
    view full answer...
  • 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 taillight...
    view full answer...
  • 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 # PTW2992 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...
    view full answer...
  • Trailer Hitch and Wiring Recommendations for a 2007 Jeep Liberty 4x4
    You can certainly use the Curt Trailer Hitch # 13044, that you have referenced on your 2007 Jeep Liberty. I have included a link to the installation instructions for you to view along with the video that you have mentioned. In terms of wiring, there are a couple of options. If your Jeep did not come with a tow package, you will use wiring # 118524. If it did come with a tow package, use # 118381. Depending on what kind of trailer connector the trailer has, you may need to add an adapter...
    view full answer...
  • The Best Trailer Wiring Recommendation for a 2004 Jeep Liberty
    For 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...
  • Which Years of the Jeep Liberty Will Take Curt Trailer Hitch 13044
    Sorry to hear about your 2005 Jeep Liberty going to that used car lot in the sky. As for Curt trailer hitch # 13044, it fits the 2002 to 2007 Jeep Liberty. Whomever buys will also need some accessories if they plan to tow. You can point them right to us! I recommend etrailer ball mount kit # EBMK2EL. It comes with a ball mount, interchangeable ball set, a pin and clip, and a storage bag. And for trailer wiring use # 118524. I have linked instructions and videos for the hitch and wiring.
    view full answer...
  • Does Trailer Wiring Install Harness 118524 Affect Vehicle Blinkers
    The trailer wiring harness part # 118524 that you referenced will not affect how the turn signals of your 2007 Jeep Liberty illuminate and will only give you a way to allow the trailer taillights to operate. They will blink red on the trailer.
    view full answer...
  • Recommended Trailer Wiring Harness for a 2006 Jeep Liberty without Factory Tow Package
    For 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...
  • Parts Needed to Install a 7-Way and Brake Controller on a 2006 Jeep Liberty
    It's possible you would be able to install the part # 20135 on your 2006 Jeep Liberty, you will need to check to see if your vehicle has the necessary connector and if it is active first. You would find the connector at the rear of the vehicle near the drivers side frame rail above the spare tire. Using a circuit tester like part # PTW2993 test the pins of the connector while applying the different taillight functions. If that all checks out the # 20135 would work for you. If not you...
    view full answer...
  • Fit and Compatibility of 4-Way Trailer Wiring Harness on a 2007 Jeep Liberty
    It sounds like your wife's 2007 Jeep Liberty didn't come with the factory 7-way. So you are correct that either the Tow Ready # 118524 or the Curt # C55382 are confirmed to fit her vehicle. The difference is in the powered converter, when the choice is available is always the better option than the non-powered because of the circuit protection provided and because of the fact that the power to illuminate the lights is being pulled directly from the battery rather then through the more...
    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 into...
    view full answer...
  • Recommended Trailer Wiring Harness Options for 2002 Jeep Liberty
    If you're comfortable with the process of using a circuit tester like # PTW2993 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...
    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...
  • 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 # PTW2993, if needed. With a helper in the cab of the vehicle and the taillights 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...
  • Wiring Needed to Flat Tow and Tow a Trailer with a 2004 Jeep Liberty
    Even though the wiring looks the same for flat towing and trailer towing with a 2004 Jeep Liberty, you actually will need to use different wiring harnesses. If you don't already have wiring on your Liberty for towing a trailer then I recommend going with the Tekonsha T-One # 118524. This comes with connectors that T into the wiring on your tail lights and wiring that you run up to your battery to power your trailer lights. This gives you a 4-Way connector to activate the standard light...
    view full answer...


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Do you have a question about this Custom Fit Vehicle Wiring?


Info for this part was:

Employee Jackie C
Expert Research:
Jackie C
Employee Michael H
Expert Research:
Michael H
Employee Jameson C
Expert Research:
Jameson C
Employee Adam R
Expert Research:
Adam R
Employee Jeffrey L
Expert Research:
Jeffrey L
Employee Andrew K
Video by:
Andrew K
Employee Joshua S
Video Edited:
Joshua S
Employee Sue W
Video Edited:
Sue W
Employee Nicholas E
Test Fit:
Nicholas E
Employee Rick A
Test Fit:
Rick A
Employee Laura H
Updated by:
Laura H
Employee Wilson B
Updated by:
Wilson B
Employee Alexander C
Updated by:
Alexander C
Employee Isabelle B
Updated by:
Isabelle B
Employee Cole B
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Cole B

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