Towing Equipment› Trailer Wiring and Electronics

Kia

Trailer Tow Harness with Modulite HD Module

$171.00

SKU: 118290

Special Order
Special Order
Ships in 4–6 weeks
Free Shipping over $200
$100 Minimum Order
30 Days Return
INSTALL DIFFICULTY
DIY PRO SHOP

Easy — 1–2 hours

Overview

The Tekonsha 118290 is a trailer tow harness designed as an exact replacement for damaged factory wiring harnesses. It installs quickly on vehicles not pre-wired from the factory and upgrades existing 4-Flat wiring to 6 or 7-Way connectors.

This harness connects directly to the standard factory connector, simplifying the installation process. It includes the Wiring Harness and a Modulite HD Module for comprehensive functionality.
Show original supplier description
The Tekonsha 118290 trailer tow harness serves as a direct replacement for damaged factory wiring harnesses, offering a straightforward solution for restoring trailer connectivity. This harness is designed to upgrade a vehicle's existing 4-Flat wiring system to accommodate 6 or 7-Way connectors, enabling compatibility with a wider range of trailers. It features a design that connects directly to the standard factory wiring connector, eliminating the need for complex splicing and specialized tools. The unit includes both the main Wiring Harness and a Modulite HD Module, ensuring robust performance and reliable signal transmission for trailer lights and braking systems. The recommended use for this product is as a replacement for damaged factory wiring harnesses, ensuring a seamless fit and function. It is constructed from Polyvinyl Chloride (PVC) for durability.
Vehicle Symptoms
  • Trailer lights not functioning
  • No brake lights on trailer
  • Turn signals not working on trailer
  • Trailer wiring connector damaged
  • Need to upgrade from 4-flat to 7-way
Relevant Conversations
  • trailer lights not working Kia
  • how to install trailer wiring harness Kia
  • Tekonsha 118290 installation
  • upgrade 4-flat to 7-way trailer connector
  • Kia trailer wiring modulite
  • trailer turn signals not working after hitch install
  • best trailer wiring harness for Kia
  • Kia factory trailer harness replacement
  • trailer brake controller wiring Kia
  • does 118290 work with Kia Sorento

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

Fitment

Fitment Guaranteed

Don’t gamble
on fit.

Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

Available on iOS & Android

Specifications

BrandKia
Part Number118290
CategoryTowing Equipment
5,000+ Trusted brands
1M+ Enthusiasts
5M+ Parts sold
(760) 282-4645 hello@motormia.co

Buy with Confidence

Returns & Fitment

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

View Full Return Policy

Shipping

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

Free shipping over $200 in the continental US. Alaska, Hawaii, U.S. territories (Puerto Rico, U.S. Virgin Islands, Guam, American Samoa, and the Northern Mariana Islands), and international orders carry surcharges — most appear at checkout. Some exceptions (LTL freight, or suppliers who quote freight only after we place the order) won’t. In those cases we’ll reach out with the exact charge before your order moves forward.

View Full Shipping Policy