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Custom Fit Vehicle Wiring > 2012 > Jeep > Liberty

Tow Ready Custom Fit Vehicle Wiring for the 2012 Liberty by Jeep

Tow Ready Custom Fit Vehicle Wiring

ratingratingratingratingrating (25 reviews)


Code:   118554

Retail:$83.82

Price:$64.95


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Shipping Weight: 2 pounds

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T-One Vehicle Wiring Harness - 2012 Liberty by Jeep

Features:

  • Provides a 4-pole flat trailer connector for the Jeep Liberty
  • Quick and easy
  • No cutting, splicing or taping
  • Solid one piece construction
  • 16 Gauge bonded wire with 4-flat plug
  • Factory appearance
  • Simple do-it-yourself instructions on every package
  • Can be used with 5-pole, 6-pole, or 7-pole adapters

Tech Tip: It is always a good idea to apply a small amount of grease to all electrical connections to help prevent corrosion.


Warning: Overloading circuit can cause fires. Do not exceed lower of towing manufacturer rating or:

  • Max. stop/turn light: (7.5 amps)
  • Max. tail lights: (7.5 amps)

Read Jeep Liberty owner's manual and instruction sheet for additional information.


118554 Tow Ready T-One Vehicle Wiring Harness



Video of T-One Vehicle Wiring Harness


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

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Video Transcript for Trailer Wiring Harness Installation - 2012 Jeep Liberty

Today on our 2012 Jeep Liberty well be installing the Tow Ready T1 connector, part number 118554. First to begin our installation well open up the rear cargo door. Well need to remove the fasteners that secure the taillight housing in place. Starting here on the drivers side, well go ahead and remove the two fasteners and then gently pry the taillight housing away from its current position, being careful not to break the alignment tabs underneath. Now well go ahead and remove the taillight assembly by pressing on the locking tab for the connector and removing it from the assembly. Well go ahead and set it aside for reinstallation later.

Next well go ahead and repeat the same process on the passengers side. Now well start making our connections. With the yellow and brown connector well take the socket and plug it into the connector on the drivers side, plugging in line with the manufacturers wiring. Then we can take the red and green wire connector along with our four pole and feed it down between the bumper cover and the body, and or sheet metal of the vehicle. Next well go ahead and attach the power wire for our converter box.

Using the black wire coming out of the converter, yellow butt connector provided with our install kit well go ahead and crimp the two together. Then well take the extra length of black wire provided with our install kit, strip back one end and install it into the butt connector and crimp it down. Now with that done well go ahead and take a clean cloth and clean off the sheet metal just below the taillight assembly. Once its cleaned we can peel back the two way adhesive and secure the converter box directly to the sheet metal. Now well go ahead and take our power wire and follow the same route as our red and green wire connector and four pole down between the bumper cover and the body of the vehicle.

Next well go ahead and take the white wire with the preattached ring terminal which will be the ground wire for our converter box, and secure it to the body of the vehicle, using a self-tapping screw. Locating an area where the sheet metal doubles up can make for a great ground location. Now with the ground secured, well go ahead and take our taillight assembly and lug it into the opposite connector of our new Tow Ready harness. Now we can go ahead and reinstall the taillight assembly. Now with the drivers side reinstalled well go ahead and get underneath the vehicle and start routing our wires over to the passeners side.

Keep in mind when routing your wires you want to stay away from excessive heat, such as the exhaust, or moving components such as steering or suspension. As we route the red and green wire connector along with our four pole that will go to the center of the vehicle and down to the hitch, as were routing them along well use zip ties to secure it up underneath the vehicle. Now that weve got our red and green wire connector over on the passengers side well go ahead and feed it up behind the bumper cover and the body of the vehicle below the taillight assembly. Now with our wire secured underneath well go ahead and cut off the excess from the zip ties to clean up our install look and move back to the passengers taillight assembly. Here well go ahead and take the red and green wire and zip tie or secure it to the manufacturers wiring. Then we can make our connection with the T connector and the manufactures wiring. Now for our extra wire well go ahead and bundle it up and use a zip tie to secure it, and then take the socket and plug it into the back of the taillight assembly. With that done well go ahead and reinstall the taillight assembly. Next well get back underneath the vehicle and start routing the power wire up to the front of the vehicle into the engine compartment and up to the battery. As we route our wire well go through the frame when possible and zip tie as necessary. When routing through the frame well use a pull wire, or in this case well be using a piece of air tubing to assist in routing our wire. Now that weve got the wire routed up toward the front of the vehicle well need to add a couple of loom clamps to assist in securing our wire. Well be using the Redline metal loom clamp, part number A0500 along with a couple self-tapping screws. Now that weve gone through the second loom clamp well go ahead and feed it up into the engine bay, and then pull it up to the top of the engine compartment. Here we can take a zip tie and secure it, and then route it over to the battery. Now well go ahead and remove the battery cover and prepare our fuse holder. In this application when preparing our fuse holder, well go ahead and cut the fuse holder off center to leave enough length so that we can travel up through the positive battery terminal cover. After we cut it, well go ahead and strip back both sides and on the short side well add the yellow butt connector and secure it. The long side well feed up through the battery cover and then secure our ring terminal to it. Now that weve got the ring terminal secured well go ahead and remove the nut on the positive battery post, install the ring terminal and then resecure the nut. Now well go ahead and finish routing the fuse holder and reinstall the positive battery cover. Next well take our fuse holder and the black power wire and cut off any excess from the power wire. Then well strip it back and attach it to the yellow butt connector. Once weve made this connection well once again go ahead and wrap up the yellow butt connector and wire with some black electrical tape. With that done well go ahead and install the fuse and the fuse cap. This will complete the install of our Tow Ready T1 connector, part number 118554 on our 2012 Jeep Liberty.


Customer Reviews

T-One Vehicle Wiring Harness - 118554

Average Customer Rating:  ratingratingratingratingrating4.6 out of 5 stars   (25 Customer Reviews)




- 118554

ratingratingratingratingrating by: Glenn L.06/28/2013

Is this review helpful?


Wiring harness was quick and simple plug-in at the rear tailights but the most challenging was running the power line from the rear of the 2010 Jeep Liberty to the engine compartment. It took a little longer than I expected. All parts needed were in the kit for installation.86552



- 118554

ratingratingratingratingrating by: Glenn06/07/2013

Is this review helpful?


The installation video found on your site couldn't of been any better! I ordered the curt hitch and Tone wiring harness for my 2012 liberty, delivery was fast and installed hitch in 10 min in my garage! 83751


Comments

Product is great except after towing 1 time now my passenger side rear turn signal will not work with the T-one wiring harness plugged in to that side, at first I thought it was a blown bulb , found bulb was good after I unhooked the rear passenger side t-one harness and plugged factory plug back in , the bulb is good, do I need to install a heavy flash relay? Or module? Help!!

comment by: Glenn - 6/13/2013


1635

Check the individual pins in the plugs on the harness and the plugs for the taillights of the vehicle, make sure they are seated all the way in. We saw this happen on another Dodge vehicle and had the exact same symptoms. If that does not solve it for you, there are some diagnosing procedures we can walk you through. Just give us a call at 1-800-298-8924.

Patrick B - 6/18/2013




- 118554

ratingratingratingratingrating by: S McC05/13/2013

Is this review helpful?


Priced right. Speedy delivery on time. Easy instructions and on-line video made for easy installation. Trailer hitch and wiring harness for 2011 Jeep Liberty to tow small boat and atv trailer, bike rack etc.79994



- 118554

ratingratingratingratingrating by: Adam P.05/21/2012

Is this review helpful?


I hooked it up by myself just fine. Not clear on which directions to follow. The paper directions says to disconnect the negative battery, the online doesn't. I disconnected my battery on a 2008 Jeep Liberty and now I am having computer problems that the dealership cannot figure out. It says "error" on the odometer and might cost me a pretty penny. Very unhappy about that.41089



- 118554

ratingratingratingratingrating by: Aaron H.05/24/2012

Is this review helpful?


Wow! This thing is awesome. Not only was it easy, it looks like a factory installed harness. There are no cobbled wires or nasty splices anywhere. Love it. The installation videos on this site make etrailer the best! I hate hard to follow goofy written instructions. P.S. If it had little shrink tubing for the battery wire splice that would have been even better. 41541



- 118554

ratingratingratingratingrating by: JTM04/02/2014

Is this review helpful?


You tube video made the installation easy. I plan to shop again.123487



- 118554

ratingratingratingratingrating by: Ross Burns11/04/2013

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Everything was good. Great product. Great customer service. Thanks106290



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ratingratingratingratingrating by: Cliff H09/08/2013

Is this review helpful?


Wiring harness went in great no problem with tail lights.Wire from the battery to the box in rear sucked maybe it was the car but they should find a better way.....98917



- 118554

ratingratingratingratingrating by: Harry L08/30/2013

Is this review helpful?


Just installed today. Works perfectly and perfect fit for my vehicle. 97665



- 118554

ratingratingratingratingrating by: bob ed05/31/2013

Is this review helpful?


fast shipping as always,everything I get from etrailer fits like a glove,ill be back82797



- 118554

ratingratingratingratingrating by: Dave R.04/22/2013

Is this review helpful?


Very simple to install with clear instructions. If you are not a reader, just search youtube for the video that shows you how. Order with no worries.77382



- 118554

ratingratingratingratingrating by: Steven04/08/2013

Is this review helpful?


looks very well made and is fairly easy to install 74729



- 118554

ratingratingratingratingrating by: Don03/26/2013

Is this review helpful?


Very happy with the hitch I ordered from you. The installation time was accurate as well as easy. Delivery was quick. Thanks, D.A.72502



- 118554

ratingratingratingratingrating by: Nikolas03/01/2013

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Fast shipping, super easy to install, took about 40 minutes.68322



- 118554

ratingratingratingratingrating by: Michael02/25/2013

Is this review helpful?


Good hitch and wiring. Easy to install. I did it in less than hour and I am 70 years old. 67765



- 118554

ratingratingratingratingrating by: Busy Body11/04/2012

Is this review helpful?


Great delivery and easy installation! 58824



- 118554

ratingratingratingratingrating by: Ron R.09/15/2012

Is this review helpful?


The quick connections make the job easy. Would like to see a better video on how to run the hot wire to the front of vehicle. Great value for the money. 54767



- 118554

ratingratingratingratingrating by: Uncle Al07/06/2012

Is this review helpful?


Easy to install and the lights worked ... what more can you ask for? I just hope it lasts longer than the previous two that were dealer installed and only lasted one year each.46988



- 118554

ratingratingratingratingrating by: Stephen DeStefano05/16/2012

Is this review helpful?


This company has terrific products and the instructional videos make them a cinch to install. They are now my go to company for all my trailer needs. 40739



- 118554

ratingratingratingratingrating by: Mark S05/14/2012

Is this review helpful?


Great product, fast shipping. 40301



- 118554

ratingratingratingratingrating by: Kevin S.05/12/2012

Is this review helpful?


Had it installed in 20 min. great produ ct40219



- 118554

ratingratingratingratingrating by: Mike B05/10/2012

Is this review helpful?


The wiring harness was easy to install and cost less than half of what the dealer wanted to charge for a Mopar wiring harness. I would definitely recommend this product.39998



- 118554

ratingratingratingratingrating by: Anthony j04/12/2012

Is this review helpful?


Works great!!! 36927



- 118554

ratingratingratingratingrating by: john s04/11/2012

Is this review helpful?


very easy to install 36834



- 118554

ratingratingratingratingrating by: Omar f.03/28/2012

Is this review helpful?


Plug and play. Installation video couldn't have made it any simpler. Everything was there to install. Perfect fit and measurements.35408



Ask the Experts about this Tow Ready Custom Fit Vehicle Wiring
Expert Answers about T-One Vehicle Wiring Harness - 118554                                            Do you have a question about this Custom Fit Vehicle Wiring?


  • Which Trailer Connector Will Fit T-One Vehicle Wiring Harness 118554 on a 2010 Jeep Liberty
  • Once the 118554 harness is connected to your 2010 Jeep Liberty it will connect to any trailer with a flat four pole harness. If you need a flat four pole harness for your trailer we do have one available. You could use part # 18044 and cut off the vehicle side connector since you do not need it and attach the other end to the wires on the trailer. If your trailer has a different style connector, like a 5/6/7-Way connector, let us know and we can find you the other parts you would need.
    view full answer...

  • Brake Controller Wiring on a 2008 Jeep Liberty With Factory Class III Trailer Package
  • The Class III trailer package on the Jeep Liberty comes with a 7-way connector at the rear of the vehicle. To install a brake controller on your 2008 Jeep Liberty with a factory 7-Way you will need to hardwire the wires from the back of the brake controller to the vehicle. This vehicle does not have a brake controller port that you can plug the brake controller into. The four wires on the back of the brake controller are: White: Ground, attached to the vehicles negative battery termina
    view full answer...

  • Is it Necessary to Attach Power Wire to Battery when Installing a Modulite
  • The video you watched shows the installation of a different part # on a different model year Jeep Liberty. For the 2009 model, running the power feed to the battery is necessary so that the voltage required for illuminating the trailer lights is drawn directly from the battery.
    view full answer...

  • Is there a Replacement Modulite Converter for the Custom Fit Vehicle Wiring on a 2008 Dodge Nitro
  • This sounds like something internal in the modulite has gone bad. Since there are no serviceable parts inside the modulite, there is not a replacement just for it because that would require opening the box to make the necessary wire connections. Because of this, you will need to replace the whole 118455 unit.
    view full answer...

  • Trailer Hitch, Wiring, and Brake Controller Recommendations for a 2008 Jeep Liberty
  • If installed correctly the Tow Ready T-One Wiring Harness for the 2008 Liberty by Jeep, part # 118554, you should not have to worry about damaging the electronics. This converter only uses the vehicles signal inputs as switches, and the actual power output to the trailer comes directly from the vehicle battery. The converter is designed to only draw 5 mili-amps and is designed to protect your vehicles sensitive circuitry. I've included installation directions in a link below. We offer numero
    view full answer...

  • Where Does T-One Vehicle Wiring 118554 Connect on a 2010 Jeep Liberty Sport
  • The connectors on the # 118554 wiring will plug into the back sides of the tail lights on your 2010 Jeep Liberty Sport. To access the back of your tail lights, open the tail gate and remove the two clips holding each light in place. Once this is done they should pull out toward you. You will see factory wiring running into the back side of each light. Unplug this wiring, and plug the matching connector from the harness into the port on the back of the light. The other connector on the wir
    view full answer...

  • How to Find the Stop Light Wire to Install a Trailer Brake Controller on a 2008 Jeep Liberty
  • Finding the correct wire on the brake switch for a brake controller red wire is pretty easy. You will need a circuit tester like # 3808 if you do not already have one. You will use the circuit tester to probe the wires on the brake switch. The wire you need will show a signal ONLY when the brake pedal is pressed and not at any other time. If a wire also shows a signal when the head lamps are on or turn signals engaged it is not the correct wire. You need a dedicated brake light wire. If y
    view full answer...

  • Diagnosing Ground Problem on Trailer Towed by 2008 Jeep Liberty
  • You are describing one of the classic symptoms of an insufficient ground connection. When you turn on the vehicle headlights and the running lights on the trailer come on, the system is pulling maximum amperage. If there is poor ground connection, this is when it will show itself. Make sure that the ground wire for the trailer connector on your Liberty is securely attached to clean metal on the vehicle chassis or frame. Check the connector on the trailer. The white wire from the trailer conne
    view full answer...

  • Testing the Running Light Circuit on a 4 Pole Trailer Connector
  • If you are not sure of the exact wiring harness you are using on your 2012 Jeep Liberty, then you could be using a wiring harness that is not compatible with your new jeep. The T-One Vehicle Wiring Harness, part # 118554 is the correct wiring harness for your vehicle. If you verified that you have the correct wiring harness, then it sounds like the converter box could have a short allowing constant power to run through the running light circuit, or the brown wire on the wiring harness going t
    view full answer...

  • Can a Trailer Battery be Charged through the Trailer Connector on a 2011 Jeep Liberty
  • A trailer battery cannot be charged with trailer connector wiring because the wiring is too small and the vehicle alternator cannot provide the amperage to up charge a trailer battery. At best, it can only maintain the current charge that is in the battery. To charge a trailer battery, I recommend a battery charger like # CTEK56158. This charger is much more effective than old school trickle chargers and it will not overcharge a battery. The charger uses a 4 step process to charge a battery:
    view full answer...

  • No Power On Trailer Wiring Harness Installed on a 2012 Jeep Liberty
  • To determine if wiring harness # 118554 is the problem, you will want to test it. With the trailer disconnected you will need to use a circuit tester such as # 3808 to test the pins on the 4-Way end of the wiring harness while someone sits in the 2012 Liberty and runs through each light function. If there is no power on the harness at the 4-Way then you can make sure that 1) the fuse is installed in the power wire, 2) the power wire is connected to the positive battery terminal, 3) the ground
    view full answer...


Jeep Liberty Accessories


Info for this part was:


Photos by:
Theodore B

Expert Research:
Robert G

Expert Research:
Michael H

Expert Research:
Jeff D

Video Edited:
Joshua S

Test Fit:
Nicholas E

Video Edited:
Patrick B

Video Edited:
Mike H

Video Edited:
Dustin K

Test Fit:
Shane T

Video by:
Alan C

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