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Upgraded Circuit Protected ModuLite with 4-Pole Flat, Hardwire Kit, and Circuit Tester

Upgraded Circuit Protected ModuLite with 4-Pole Flat, Hardwire Kit, and Circuit Tester

Item # 119179KIT
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119179KIT - 4 Flat Tekonsha Trailer Connectors
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This ModuLite Ultra Protector with integrated circuit and overload protection safeguards both itself and the tow vehicle against electrical shorts or mis-wiring situations. Lowest Prices for the best wiring from Tekonsha. Upgraded Circuit Protected ModuLite with 4-Pole Flat, Hardwire Kit, and Circuit Tester part number 119179KIT can be ordered online at etrailer.com or call 800-298-1624 for expert service.
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Tekonsha Wiring - 119179KIT

  • Trailer Connectors
  • Vehicle End Connector
  • 4 Flat
  • Plug and Lead
  • Tekonsha

This ModuLite Ultra Protector with integrated circuit and overload protection safeguards both itself and the tow vehicle against electrical shorts or mis-wiring situations.


Features:

  • Re-settable short circuit & overload protection safeguards itself and the tow vehicle against harmful electrical shorts and mis-wire situations
    • Automatically resets
  • Virtually eliminates draw on the vehicle's tail light circuit
  • Tail light circuit has been upgraded to work with vehicles using Pulse Width Modulation (PWM), allowing converter to fully turn on, giving trailer lights full brightness during activation
  • Powers the trailer's stop, turn, tail and running lights directly from the tow vehicle's battery
  • Unit prevents feedback from trailer to vehicle system
  • May be used on 2- and 3- wire systems
    • When used on 2-wire systems, brake wire on harness must be grounded
    • Adapts a 3-wire system on the towing vehicle to work with a 2-wire system on the trailer
  • Will work on vehicles and trailers with either LED, incandescent, or standard bulb tail lights
  • Works with most multiplex wiring systems


Included with Hardwire Kit:

  • Modulite Wiring Harness (119179)
  • Modulite Install Kit (118151)
    • 20' of 12 gauge wire, ring terminals, and inline fuse for battery connection
  • Circuit tester
    • To help find wires behind vehicle tail lights to gather signals
  • (5) Quick splice wiring connectors
    • Makes tapping into wires quick and easy
  • Integrated 4-Pole Cover
    • Protects 4-pole connector from the elements and reduces dirt, debris and corrosion for trouble-free use


119179KIT Upgraded Circuit Protected Modulite with 4 Pole Harness and Hardwire Kit - Includes Testers

Installation Details 119179KIT Installation instructions

This Product Fits The Following Vehicles



California residents: click here



Customer Reviews

Upgraded Circuit Protected ModuLite with 4-Pole Flat, Hardwire Kit, and Circuit Tester - 119179KIT

Average Customer Rating:  4.6 out of 5 stars   (329 Customer Reviews)

This ModuLite Ultra Protector with integrated circuit and overload protection safeguards both itself and the tow vehicle against electrical shorts or mis-wiring situations.

- 119179KIT
by:

I did not do the actual install so I can’t comment on that but the kit is great. The wiring stays in the trunk when not in use so it’s protected from the elements and since the cable is long it easily reaches any trailers plug. I’ve had it in my car for a year now and towed several small trailers since and it’s worked perfected since day 1.



- 119179KIT
by:

One year follow-up: This lighting kit was needed for my 2014 Mazda 3 trailer hitch, supporting both LED and incandescent lights present on the car and on the two trailers commonly towed. I also just returned a u-haul trailer rented for a cross-country trip. The upgrade kit uses a reed relay versus a solid state relay, I believe, allowing for use with low-voltage LED lights. I've had no problems with the kit or its connections -- none at all. The installation was straightforward as described in the instructions, except that I chose to route the cabling inside the vehicle from front to back. The one battery connection was the most difficult, for my back anyway, since I had to pass through the firewall via an existing hole cover over the unused clutch mount on my automatic transmission vehicle body. Plenty of wire and cable was provided, and the guillotine-style wire taps simplified tapping in to the running light, turn signal, and brake wires. A nifty 12v LED circuit tester was even provided for probing these wires. Some notes: Use pliers to close the guillotine taps completely, but avoid deforming the plastic by squeezing too hard. Route all wires under carpets and trim panels before mounting the control module, since the two signal light cables are none too long.



- 119179KIT
by:

These kits require a little work for the installer, all-in-all, the kit is the correct option for the newer cars. The tail lights, with newer vehicles, are now controlled through a controller and not just a switch. Therefore, protecting the vehicle's light control circuit is essential, and these modules do this.



- 119179KIT
by:
2003 Mercury Grand Marquis

I purchased this kit to install in my 2003 Mercury Grand Marquis. This wiring kit is just the ticket for getting your hitch up & running. You need a wire stripper/crimping tool, some black electrical tape, and definitely a creeper when you run the wire from the module to the battery. I would also recommend a set of trim removal pry bars as demonstrated in the eTrailer video. This kit installs easily, but take your time, especially when routing the wire to the battery. Make sure you protect the wire from the rough/sharp edges you WILL encounter! I wrapped electrical tape around the sharp edges and around the wire, should last a while. Also, use the included zip ties where necessary so it doesn't get hung up on something. To use the tester, ground it out (see pic) and come through the insulation at an angle instead of straight down (the lead will 'give' otherwise). I routed the battery wire through the rubber body plug, since there wasn't an easier way I could find. I will probably buy another plug and make a small cut for the wire to pass through later (a little silicone or rubber cement will seal it off). This kit might cost more than you might like to spend, but I highly recommend it for a proper and safe wiring job.



- 119179KIT
by:
2010 Volkswagen Jetta SportWagen

I use this harness for my '10 VW Sportwagen to tow a camper and a utility trailer. It's worked beautifully for a year. I stow the wiring in the left hand storage compartment so it's out of the way when I'm not using it. Great setup and simple install. :)


Comments
Been using for a year and its been awesome! I even towed my little 13 camper to the West Coast and up highway 1 all the way to Washington. Amazing trip, no issues at all with wiring.
Chris L - 07/23/2018



- 119179KIT
by:
2010 Mercury Grand Marquis

Installed in 2010 Merc Grand Marquis. While intstalling red wire from battery, I used wire loom so no chafing occurs. Wiring kit works perfectly! No load on car system with this kit. Thanks Eric in Louisiana


Comments
still works great!
Eric - 12/04/2018



- 119179KIT
by:
1991 Chrysler New Yorker

I purchased a class 2 Draw-tite hitch, drawbar with 3 1/2 " rise, 1 7/8 ball, and the circuit protected modulite 4 pole harness kit for my 1991 Chrysler New Yorker. The shipping was incredibly fast. Everything fit well and easy install. I saved $200.00 installing it myself. Now I'll be able to tow my 14 ft aluminum fishing boat and catch me some nice trout. Thank's for the good products and fast shipping. Here's some pics. You can't even see the hitch unless the drawbar and ball are on. Lou



- 119179KIT
by:
2008 Mercury Grand Marquis

Installed this on 2008 Mercury Marquis. The kit was easy to install and there was plenty of wire to get from the trunk to the battery on this long car. Love the built in fuse for safety. I have only used it a couple time to pull around my 4x8 trailer but, it seem to work well. All the turn signals work and because it powers itself the light on the car are unaffected.



- 119179KIT
by:
2002 Mercury Grand Marquis

I WAS AMAZED AT THE SPEED OF DELIVERY. I HAVEN'T INSTALLED IT YET BECAUSE I AM ILL AND IT IS TOO COLD, BUT THE VIDEO MAKES IT SEEM EASY TO DO. I AM EXCITED ABOUT THE NEW WIRING SYSTEM THAT WILL ELIMINATE THE PROBLEMS THAT I HAVE HAD WITH EARLIER WIRING SYSTEMS FOR MY OLDER 2002 MERCURY. I WAS VERY PLEASED AT THE DELIVERY OF MY HITCH ALSO. IT CAME QUICKLY AND EVERYTHING WORKED OUT VERY WELL. INSTALLATION WAS EASY AND STRAIGHT FORWARD. I DID IT IN MY DRIVEWAY. I JACKED UP THE HITCH TO TOUCH THE FRAME AND MARKED IT OFF FOR DRILLING. I DID IT ALONE. WORKED GREAT. I DRILLED THE HOLES, THEN BOLTED ONE AT A TIME. I HAD A NEED TO CALL AND ASK QUESTIONS, AND FOUND IT EASY TO DO BUSINESS WITH THESE PEOPLE. THEY HAD THE ANSWERS AND WERE VERY HELPFUL. THESE GUYS ARE THE BEST.



- 119179KIT
by:
Saturn Relay

The harness came with all needed pieces, including more than enough hefty power wire, connectors, splices, etc. Once hooked up (easy) it works great and unlike my previous un-powered harness, this one keeps the trailer lights bright and doesn't stress my flasher relay. Great product, highly suggested.



- 119179KIT
by:

Hi Never finished installing it as I was also putting on a hitch as well and ran out of time -- I will finish it this spring sometime(2020). I do remember wishing it was more plug n play when I purchased this but i could not find a version of that at the time. I would have payed more for one that had the inline connectors. I gave it only 3 stars as it did not have the in line connectors - this day and age that should be that standard. I would go out and get a new version but I already have the power line run witch is about half the work. Cheers



- 119179KIT
by:

The wiring harness is GREAT, has worked well. The instructions were not 100% clear. 1. Do I leave the RED wire from the vehicle unconnected, 2. Drivers side tail light, Where do I connect the YELLOW and BROWN Converter wires. 3. Passenger side tail light, What do I connect GREEN converter wire to? 4. It would be great to run the power wire from the battery inside the vehicle instead of below the vehicle, do you have instructions for this?


Comments
In the instructions, I would focus on the section labeled TOW VEHICLE INPUTS - DETERMINATION. This will help outline which wires are used for what function.
-- Etrailer Expert Tyler M - 03/16/2020


- 119179KIT
by:

Excellent product and your installation instructions made it a snap to install. Product is working great.



- 119179KIT
by:

The 1 DIY area I don't like doing is electrical work...but this was far more simple than I thought. Had everything I needed to get the job done and me on the road with lights on the trailer!



- 119179KIT
by:

Plenty of wire, quality connections, bright and had no issues. I did have to get wire cover tubing for the loose ends at the front is all.



- 119179KIT
by:
2011 Land Rover LR2

I used the [online] video for the installation since i have an LR2 and it was super easy. The only thing I purchased which did not work for me as it did in the video were the butt connectors. the blue clasps worked way better. The butt connectors were really hard to pinch and did not melt like in the video so i got rid of them.



- 119179KIT
by:
2007 Ford Mustang

I have a 2007 Ford Mustang, the exact vehicle in the video, and it was supremely helpful in installing this trailer light kit. It works exceptionally and now I can tow my sailboat :) thanks for the excellent product!



- 119179KIT
by:

Very good wiring kit.



- 119179KIT
by:
2000 Lexus RX 300

I'm only sorry I didn't take photos of the installation of the trailer wiring. I have to say, it was the easiest most enjoyable install I may have ever done of this kind. I'm not the handiest when it comes to this type of thing, but coupled with the complete wiring and hardware setup, it really made all the difference. The video that accompanied my specific vehicle also made a world of difference, major high marks for this. The only thing that may have helped was a bit longer wire for the passenger side (green) wire, but that's probably not even worth mentioning though I did. I'm putting together a tow package for hauling a light motorcycle trailer, so I figured I'd try this myself and I'm glad I did, great instructions make all the difference! These guys include everything right down to the wire ties and it's all top quality heavy gauge wire. Thanks again and I'll be using you guys for sure in the near future. Graham


Comments
Thanks for the follow-up. All is well with the wiring, its also strange synchronicity as I just bought a little trailer last week and for the first time in a year I used my new wiring harness again. Perfect, thanks again!
Graham H - 09/27/2017



- 119179KIT
by:

This installs easily, the included voltage tester was handy for verifying I had the correct wire. The wire for the right turn signal was a little short to make it the whole way from where I mounted it so I had to add some wire.



- 119179KIT
by:

The instructions that came with the kit were inadequate. It was not clear where wires from the trailer light power converter connected to the car. I did find a generic diagram on the website that cleared up that issue and got the job done ( Y=L Sig, G=R Sig, br=Run, R=Brk). It works. The whole job, including looking stuff up on the website took about three hours. It included quite a bit of trim removal and replacement in the rear of the car (a Volvo V70).



- 119179KIT
by:
2013 Kia Soul

I bought the Draw-tite hitch and the Modulite wiring harness for my new 2013 KIA Soul and was overall very pleased with the service and the product ..... I'm glad I watched the installation videos when I ordered the items as I was unable to find them when I went back in to doublecheck a couple of details ..... the Modulite wiring harness did not come with any instructions at all ! And the hitch instructions didn't show the secret trick about lowering the muffler .... the videos were VERY helpful but I don't understand why I couldn't find them when I went back in ( admittedly, on a different computer ) to check .... But everything went together very well and is working perfectly ! E-trailer was very prompt, very competetively priced, and very helpful with their online videos ..... thanx, E-trailer !


Comments
Did your kia soul have led lighting? If so which brand did you buy and was it easy to run all the wires with go results. thanks jack
-- comment by: Jack B - 01/30/2014

You can use the 119179KIT harness with both LED light and non-LED versions of the Soul. Since the 119179 harness has its own power feed, the LED lights would be protected. We have installed the kit on a 2013 Soul and shot a video of it that I have linked below. If you let me know what year Soul you are working with and whether or not yours is LED, I can check to see if there are other options.

-- Etrailer Expert Patrick B - 2/5/2014


- 119179KIT
by:
Crown

easy to install, no problem, I tried to connect direct from my crown vic 2005 and a fuse was burn, my running lights, fix the fuse installed the 119179 kit, it work perfectly, I do recommend to use a trailer module.



- 119179KIT
by:

I got the unit wired up, but the directions are not that clear. I am good at electrical parts so I can figure it out. The directions I got, only talk about hooking up to the battery and using the fuse holder etc. It did not talk about any other wiring.


Comments
I have linked this hardwire wiring harnesss installation instructions for you.
-- Etrailer Expert Victoria B - 11/06/2019


- 119179KIT
by:

Product was exactly as described. System had lost the tracking info, called in to get requested info. Customer service not only made sure I received the info, but contacted me after the harness came in...Good job guys


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Ask the Experts about this Tekonsha Wiring

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    We make sure that the products we sell are what we say they are, and that they work the way they are supposed to work. Get real advice from a real person who has the knowledge and expertise needed to solve your problem.
  • Most detailed, accurate wiring information available.

    Because we take providing accurate product information seriously, we take our own detailed product photos, demo videos and installation videos, as well as verify measurements, instructions, and vehicle fit information.
  • Installations, made easy.

    We love helping people and have the most highly-trained customer service, hands-on experience, step by step videos and installation instructions.
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  • Personalized service for life.

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  • Trusted since 1946.

    We've been serving customers since our parts store first opened in 1946 and continue to be recognized by our customers, our vendors and third parties for exceptional service.
  • Returns Policy

    Need to return an item? No problem. Please read our Returns Policy for more information.

Info for this part was:

Employee Joe V
Test Fit:
Joe V
Employee Nicholas E
Test Fit:
Nicholas E
Employee Shane T
Test Fit:
Shane T
Employee Randy B
Test Fit:
Randy B
Employee Andrew S
Test Fit:
Andrew S
Employee Shane H
Test Fit:
Shane H
Employee Mike L
Expert Research:
Mike L
Employee Michael H
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Michael H
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Jameson C
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John H
Employee Brandon M
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Brandon M
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Adam R
Employee Lori W
Expert Research:
Lori W
Employee Rachael H
Expert Research:
Rachael H
Employee Jeffrey L
Expert Research:
Jeffrey L
Employee Zack K
Video Edited:
Zack K
Employee Joshua S
Video Edited:
Joshua S
Employee Jacob T
Video Edited:
Jacob T
Employee Andrew L
Video Edited:
Andrew L
Employee Kathleen M
Video Edited:
Kathleen M
Employee Sue W
Video Edited:
Sue W
Employee Chris R
Video Edited:
Chris R
Employee Andrew K
Video by:
Andrew K
Employee Dustin K
Video by:
Dustin K
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Alan C
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Zach D
Employee Jonathan Y
Video by:
Jonathan Y
Employee Lindsey S
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Lindsey S
Employee Sarah W
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Sarah W
Employee Isabelle B
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Isabelle B
Employee Cole B
Installed by:
Cole B

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