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

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

Item # 118491
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Custom Fit Vehicle Wiring

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Tekonsha Custom Fit Vehicle Wiring - 118491
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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 - no cutting, splicing or tapping required. Powered ModuLite reduces strain on wiring system. Call 800-298-8924 to order Tekonsha custom fit vehicle wiring part number 118491 or order online at etrailer.com. Free expert support on all Tekonsha products. Guaranteed Lowest Price 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 (304)
  • Q & A (85)
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Tekonsha Custom Fit Vehicle Wiring - 118491

  • Custom Fit
  • Trailer Hitch Wiring
  • Tekonsha
  • 4 Flat
  • 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 - no cutting, splicing or tapping required. 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 - no cutting or splicing of wires
    • Tow harness with 4-way connector plugs into connection point behind rear bumper
    • ModuLite connects in rear cargo area
  • 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
  • Supplies required relays to activate functions
  • 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. The connection point for the 4-way tow harness is located behind the rear bumper, on the driver's side. The ModuLite plugs into the factory wiring harness within the driver's-side storage compartment in your rear cargo area. Once you've plugged in the ModuLite, insert the included fuses and relays into your fuse panel as indicated in the instructions.


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.



118491 Tow Ready T-1 T-Connector - 4 Wire - Modu-Lite

Installation Details 118491 Installation instructions

This Product Fits The Following Vehicles



California residents: click here



Customer Reviews

T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector - 118491

Average Customer Rating:  4.9 out of 5 stars   (304 Customer Reviews)

Quickly and easily install a 4-way trailer connector on your vehicle with this custom wiring harness. T-One connector plugs directly into existing wiring - no cutting, splicing or tapping required. Powered ModuLite reduces strain on wiring system.

- 118491
by:

took all of 15 minutes to hook up thanks to the good installation video you people supplied online. picture is good but smaller than i would have liked. i could not find one with a larger screen with this type of installation. I wish that the camera would only come on when i put it in reverse instead of being on all the time. good quality, good installation and good service. 8903



- 118491
by:
2014 Honda Pilot

I was skeptical if this would work, my 2011 Honda Pilot came with a receiver hitch but no wiring connection for trailer lights, go figure anyhow i went ahead and ordered this wiring harness kit and i must say that this was so simple to do that my 14 year old son installed it within 20 minutes and that included screwing the item #18144 (Mounting Bracket 4-Pole Flat) (which is sold separate) to the bumper. Was very impressed with how easy it was, my Honda already had everything in the wiring to "plug and play". Thanks again E-Trailer for another fine product and also thanks for shipping it out so quickly.... You guys rock ***** 641262



- 118491
by:
2011 Honda Pilot

This is the way every company should do business. Superior product, easy-to-follow instructions, and constant communication. Thanks to everyone at etrailer! 100108


Comments
Thanks for the follow-up, Patrick. My wife and I trailer our motorcycles all over the U.S. The wiring harness for the Honda Pilot has done a great job. Thanks again for a great product.
Mike F - 09/16/2014

6859

- 118491
by:
2011 Honda Pilot

"That was easy".. Worked like a charm. Glad I went this route instead of the dealer. Saved a lot of $$. The only thing was trying to figure out which one to get on the website. I was confused. I knew I needed a 4 point connection. My vehicle had a hitch but no harness so when it asked for a tow package I wasn't sure what to select. I ended up going with the product that seemed to be used the most and had the most reviews. I made the right choice. The directions were real clear... Getting the plug off the wire harness on the vehicle was a little tricky. You have to detach the plug on the vehicle by pulling the clip out of the hole in the frame. Then the clip thats attached to the plug needs to be removed (don't break it just unsnap it). This will release one end of the plug. Then on the other side is a little snap you have to press. Once you plug in the new harness you can reconnect the snap to hold the two connections together and reattach to the frame. I should have taken pictures. Maybe someone else that reads this could do this in the future and share. 81479


Comments
1 year follow up - I havent used it much since last summer but the only problem I incurred were a few burnt fuses. It wasnt anything wrong with this product which I thought initially but the trailers had bad grounds. I had to test the harness on other trailers to narrow it down to the trailers. After fixing the trailers grounds I didnt have the problems again.
Nate J - 05/22/2014

4365

- 118491
by:
2011 Honda Pilot

As others have said, Honda wanted an incredible amount of money for their harness kit. I saw this online and read the great reviews and decided to give it a shot. Let me say this is probably the best product for the best price I've seen in a long time. The kit came very well packaged with clear instructions. I watched the video online once during the week, but it wasn't really necessary with the included instructions. I completed installing it myself in about 20 minutes on my 2011 Pilot, and it works perfectly. The only suggestion I can offer is to try and make the pictures in the instructions a bit lighter. They are dark and kind of hard to see detail. I had to count the fuses in the picture and compare it to what I saw in my car to figure out where everything went, but it was a minor complaint. All in all, this is an excellent product and very well-made for an excellent price. I'd recommend it to anyone regardless of technical knowledge or level of experience. One tip for the would-be buyer: remove the harness plug from the blue clip under the bumper to remove the harness cap. That way you can pull it down and remove the cap much more easily than trying to do it while it's still attached. 21291



- 118491
by:

This kit was perfect and easy to install. Truly "plug and play!". With the bracket that etrailer.com also carries, I made a small mod so the original cover plate still fit and I could use the plug cap. But the kit is really all you need 757094



- 118491
by:

Easy install - clear and accurate instructions. Images on instruction pamphlet were basically impossible to use, but I had downloaded the pdf and was able to use that instead. 882916



- 118491
by:
2010 Honda Pilot

Fit my 2010 Honda Pilot perfect. Instructions were solid and clear. Would buy again. 882854



- 118491
by:

The product fit great Would have been 5 stars but the directions could have been more clear by underlining the back connector was over the muffler TIP not just above the muffler 854537



- 118491
by:

Good product, easy install and good instructions. Thanks! 852564



- 118491
by:

4 plug wiring harness for 2011 Honda Pilot By following the written instructions and online video, I was able to successfully wire my vehicle with the wiring kit provided. The components were well made and fit the vehicle connectors as described. I would recommend this product to anyone wishing to add a wiring harness to their vehicle. 848337



- 118491
by:

1 year zero issues. EZ self install with everything provided at time of purchase. Would recommend and buy again from this company. 848242



- 118491
by:

Product was as shown...easy to install and has worked great since I purchased it a year ago. 847552



- 118491
by:

My husband did the install on a customers car with ease. 823070



- 118491
by:

The product, the people, the process. All top notch. Thanks so much! 819124



- 118491
by:

Product still works perfect after a yea r. Thanks! 816567



- 118491
by:

After a year of f usage we are still happy the items. Thank you! 815087



- 118491
by:

Easy instal - works as described. No issues after 1 year 807467



- 118491
by:
2011 Honda Pilot

part came in took me 10 minutes to hook up easy to read directions. hook up to trailer and lights worked. thank you very much. part got lost in new york had to call a couple times but then patti sent a second one to correct. 803966



- 118491
by:

I received my order as scheduled, installed it without any problem. Now it has been a full year since I owned it. It works well, I loved it. 793481



- 118491
by:

Works great and easy to install. No problems since install. 786346



- 118491
by:
2011 Honda Pilot

great product !!!!! took about 20 minutes to install, the hardest part was figuring out how to get the cover/cap off the wire harness under the bumper,saved a lot of money !!!! thanks 765041



- 118491
by:

I'm not a big repair guy or Mr. fix it guy but this was an easy install and works without a hitch....like what I did there? Seriously, easy install and it works. Buy it if you need lights for your trailer. 759146



- 118491
by:
2011 Honda Pilot

this is a great wiring for my honda pilot 2011. it was easy to install and get working and has worked great since installing. 756670



- 118491
by:
2011 Honda Pilot

Fit my 2011 Pilot perfectly and been working great for the past year. Easy installation. 726733


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Show More Reviews

Ask the Experts about this Tekonsha Custom Fit Vehicle Wiring

  • Determining If 2011 Honda pilot EX-L is Tow Ready
    Your 2011 Honda Pilot EX-L will be tow ready if you have a trailer hitch, trailer wiring harness, and ball mount. If your trailer has electric brakes you will also need a brake controller to be tow ready. If you have a trailer with a 4-way plug, then I recommend the Tekonsha T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector # 118491 for your vehicle wiring harness if you don't already have one. If you want a 7-way connection and don't already have it, then I recommend...
    view full answer...
  • 2010 Honda Pilot 7-Way Trailer Wiring Kit and Brake Controller Recommendation
    The T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector # 118491 is a confirmed fit for Honda Pilot models between 2009 and 2011. The Tekonsha OEM Replacement Vehicle Wiring Harness with 7-Way Trailer Connector # 118253 does have some redundancy in the parts as you stated. I reached out to my tech contact at the manufacturer and the box relays and fuses are the same. The differences are an additional relay and the wiring connector and plug. The issue is they don't have those...
    view full answer...
  • Fuse/Relay Locations for Tekonsha T-One 4-Way Wiring Kit on a 2013 Honda Ridgeline
    Thank you for the question! I reached out to my contact at Tekonsha who gave me some really great insight for the T-One # 118491 on your 2013 Honda Ridgeline. Basically this kit was built for a Honda Pilot and afterwards they ended up finding out that it also fit some model years of the Ridgeline which is why the pictures are for the Pilot and the instructions for the Ridgeline are a bit vague. Since you have the 4-Way kit you actually only need 2 of the 20A fuses and 1 relay. The...
    view full answer...
  • Recommended Trailer Wiring For 2011 Honda Pilot
    You are correct there are dramatic differences in the trailer wiring for your 2011 Pilot. I called my contact at Tekonsha and asked about your vehicle. If you are wanting a 4-way trailer connector on your Pilot you can use part # 118491. There is no cutting or splicing into the wiring on your vehicle. If you want a 7-way trailer connector on your Honda you can use part # 118253.
    view full answer...
  • Installing Tow Ready # 119491 4-Pole Trailer Connector on 2011 Honda Pilot
    According to the instructions, it's not necessary to remove the negative battery terminal. By connector clip, I'm assuming that you're speaking of the protective cap on the harness under the vehicle behind the back bumper. There are two clips on either side of the cap that need to be pushed in, in order to release the cap. If you click the provided link, you can see a video showing the # 118491 being installed on a 2010 Pilot.
    view full answer...
  • Recommended 4-Way Trailer Wiring Harness And 7-Way Harness For 2009 Honda Pilot
    For your 2009 Honda Pilot I recommend the T-One Wiring Harness, part # 118491. This simply plugs in to the connection point behind the trim panel in the rear cargo area on the driver side and under the vehicle on the driver side. This will give you a 4-way connector at the back of your Pilot. For most light towing of trailers without brakes the 4-way connector is all that is needed. A 7-way is typically used when you are towing a trailer that has brakes installed which would mean you...
    view full answer...
  • Which Wiring Harness Is Needed For 2009 Honda Pilot With Tow Package And No Trailer Connector
    I recommend the Tow Ready T-One Wiring Harness, # 118491. This harness will give you a 4-way flat trailer connector on the rear of your 2009 Honda Pilot and have all the correct fuses and relays to activate your tow package wiring. I am sending a link to the installation instructions on the Tow Ready wiring harness.
    view full answer...
  • How To Attach The Tow Ready T-One Connector Wiring Harness # 118491 To The Vehicles Bumper
    To attach the 4-Pole flat connector in the Tow Ready T-One Connector Wiring Harness, part # 118491 to your bumper, you will need to use a mounting bracket like the Tow Ready 4-Pole Flat Mounting Bracket, part # 18144. The bracket is 2-1/4 inches wide overall and comes with two self tapping screws and two Phillips head stove bolts and nuts. It can be attached to your bumper by drilling two holes and use the included self tapping screws. If you do not want to drill you can use the No-Drill...
    view full answer...
  • How to Identify Presence of Tow Package on 2012 Honda Pilot EX-L
    The best way to confirm whether a given vehicle has a factory tow package present is to check with a local dealership using your vehicle's VIN number. The dealer should be able to easily look this up. Also, please note that what physical attributes actually constitute a 'tow package' can vary between auto makers and vehicle models. We offer a 4-pole harness for the 2012 Honda Pilot without tow package, part # 118558, which includes relays and a flat 4-pole connector. This kit installs...
    view full answer...
  • 2010 Honda Pilot LX with No Tow Package Trailer Wiring Harness Recommendation
    The part you need is part # 118491. It includes the fuses, relays and other parts necessary to activate the tow wiring.
    view full answer...
  • Trailer Wiring Harness for a 2011 Honda Pilot
    The use of a universal trailer wiring harness is not recommended on the 2011 Honda Pilot in part because it is already set up for a plug and play type of wiring harness such as # 118491. Otherwise you will have to gain access to the wiring leading to the tail lights and splice into them. This will likely require removal of some trim panels in the cargo area of the Pilot. Once you have access to the wiring I recommend using a circuit tester such as # 40376 to test the wires to determine...
    view full answer...
  • Removing Wiring Harness Cap to Install # 118491 on 2010 Honda Pilot
    There are two tabs on either side of the cap, with the tabs released apply a rocking motion back and forth. You might have to keep at it for a bit, but the cap should come off. Avoid using brute force like pliers, if those tabs are damaged the plug will not be seated correctly when plugged in.
    view full answer...

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Info for this part was:

Expert Research:
Mike L
Expert Research:
Sarah L
Expert Research:
Robert G
Expert Research:
Patrick B
Expert Research:
Michael H
Expert Research:
Jeff D
Expert Research:
Reno H
Expert Research:
Jameson C
Expert Research:
Adam R
Expert Research:
Jeffrey L
Video Edited:
Zack K
Updated by:
Laura H
Updated by:
Sarah W
Updated by:
Alexander C
Updated by:
Isabelle B
Installed by:
Cole B

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