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ModuLite Installation Wiring Kit

ModuLite Installation Wiring Kit

Item # 118151
Our Price: $19.95
Accessories and Parts
Shipping Weight: 0.83 lbs
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118151 - Power Wire Installation Kit Tekonsha Trailer Wiring,Wiring
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This kit provides the wire to be run to the vehicle battery to power the lights on the trailer. Works will all ModuLite wiring harnesses and includes all of the connectors necessary to complete the installation of the ModuLite wiring harness. 1-800-940-8924 to order Tekonsha accessories and parts part number 118151 or order online at Free expert support on all Tekonsha products. Great prices and Fastest Shipping for ModuLite Installation Wiring Kit. Accessories and Parts reviews from real customers.
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  • Reviews (19)
  • Q & A (0)
  • Videos (9)
  • Photos

Tekonsha Accessories and Parts - 118151

  • Trailer Wiring
  • Wiring
  • Power Wire Installation Kit
  • Tekonsha

This kit provides the wire to be run to the vehicle battery to power the lights on the trailer. Works will all ModuLite wiring harnesses and includes all of the connectors necessary to complete the installation of the ModuLite wiring harness.


  • Kit Includes:
    • (1) 10 amp Fuse
    • (1) Fuse Holder
    • (8) Cable Ties
    • (1) Ring Terminal 3/8"
    • (1) Ring Terminal 1/2"
    • (1) Wire, 12 ga. 20'
    • (1) Butt Connector

118151 Modulite Installation Wiring Kit

California residents: click here

Video of ModuLite Installation Wiring Kit

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

Video Transcript for Tekonsha Wiring 118151 Review

Today we're going to be taking a look at the ModuLite installation wiring kit. This kit provides the wire to be run to the vehicle battery to power the lights on your trailer. It works with all ModuLite wiring harnesses and includes all of the connectors necessary to complete the installation of the ModuLite wiring harness. This kit's going to come with one 10-amp fuse. It's going to come with the fuse holder, which is this component right here. It's going to come with eight cable ties. These are going to be designed to secure the wiring up and out of the way as you run it along the length of the vehicle.

It's going to come with one three-eighth inch diameter ring terminal, one half-inch diameter ring terminal, and it's going to come with one bundle of wiring. This is 12-gauge wiring that measures 20 feet long. You're going to get a butt connector as well. Basically, what you would do is you would connect this wire here to the power lead coming out of the ModuLite. You want to connect the two wires with the butt connector, and then you take the other other end, run it to the vehicle battery, and one end of this bundle would connect to one half of the fuse holder. The other half of the fuse holder would get one of the two ring terminals placed on it, and get connected to the positive post of the vehicle battery.

Again, the 10-amp fuse is included, goes directly in this area here, pushes in, and then it's got the cap on there that would go over it and keep it safe and protected. Then, you've got your cable ties to secure any excess or slack in your wiring. That's going to do it for today's look at the ModuLite installation wiring kit.

Customer Satisfaction Score:

Customer Reviews

ModuLite Installation Wiring Kit - 118151

Average Customer Rating:  4.8 out of 5 stars   (19 Customer Reviews)

This kit provides the wire to be run to the vehicle battery to power the lights on the trailer. Works will all ModuLite wiring harnesses and includes all of the connectors necessary to complete the installation of the ModuLite wiring harness.


I installed the trailer wiring connector in about an hour and a half and it has worked well. I store the coil of the pig tail coiled in the tire inflation pump, floor compartment, until needed. I used it in my 2021 Ford Ecosport that I also installed a receiver hitch under. Easy to install and much, much cheaper than having the dealership install their version.


Twenty feet of wire wasn't quite enough to make the entire run from the ModuLite to the battery in my 2000 Ford Econoline Van. It could have used another butt connector to attach the wire to the Modulite. These were very small problems as I had other wire and a connector on hand to complete the installation. Four stars for the product.

Five stars for etrailer's website and expert advice online in the form of videos, descriptions for installation, and Q&A section!

Thanks a lot!

Young D.


Wonderful! Trailer lights bright!


Having just bought a new Kia Soul with LED tail lights, I needed to be certain to get the correct products to properly wire my vehicle without damaging the electrical system. Local installers in my hometown were going to simply tap into the rear tail light wiring and go straight to the trailer lights.

Thanks to you guys and your helpful videos, you advised me to use the #118151 Modulite Installation Wiring Kit in conjunction with with the #119176 Wiring Harness. By doing so, the power wire to operate the trailer lights comes directly from my vehicle battery, and alleviates and/or prevents possible damage to the tail light system of my car.

I advise anyone to get in touch with the "EXPERTS" at for excellent advice and superior products to get the job done!!!!


Prospect, KY


Purchased this along with the Modulite 3wire / 2wire converter, it worked like a charm!!! Thanks for all your guidance in figuring out what we needed to get our new trailer with combined stop & turn lights to work with our new truck that had separate brake & turn signals.


I think mine was used, but still worked like it was new. Not complicated at all. etrailer is the bomb!


Fast shipping! great service


Must have for converterI used this kit to run the power from the converter to the battery. It worked great and provides a 10 amp fuse...


Superior products with EXCELLENT directions enclosed within each packaged unit ordered! Will definitely use this site for any related needs!!


Product Great
Public relations Great
Best regards,

Michael M.




The product was just as advertised and it shipped overnight just as requested. Presently surprised by a company that not only has most of the products that they list on their website in stock but will also ship them as quickly as the customer may request them.


Worked well.


very good responds to my issue thanks a lot


Quality part and fast service!!


Installed and works great!


Super fast service.






See what our Experts say about this Tekonsha Accessories and Parts

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