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Super Duty OEM LED Conversion (2017-19)

1 Review

Brand: Morimoto


$267.75 Original Price:$315.0015% OFF


PART #: 1 x H129K

*Guaranteed Fitment
Easy Return


Introducing the HD Relay Wiring Harness Kit – your ticket to a cutting-edge upgrade for your Ford Super Duty's headlights! Say goodbye to outdated halogen headlamps as this kit seamlessly adapts 2017-19 Super Duty OEM LED headlights onto your truck, giving you that modern Super Duty look you crave. No need for complicated modifications – our plug-and-play solution ensures a hassle-free installation, allowing you to control low and high beams with ease using your original cabin controls. Experience the next level of headlight performance with the relay harness, designed to preserve OEM functionality without any flickering or disruptions. Crafted with precision, the harness boasts abrasion-resistant Techflex mesh sleeving and an anodized aluminum relay shell for that factory-fresh appearance under your hood. Upgrade to excellence today and illuminate your journey with confidence!


  • Seamless Integration: Effortlessly upgrade your Ford Super Duty with OEM LED headlights.
  • Plug-and-Play: No complex modifications needed – enjoy a hassle-free installation.
  • Enhanced Control: relay harness ensures smooth transition to powerful LED lighting.
  • Advanced Functionality: Maintain factory headlight features seamlessly.
  • Premium Design: Techflex mesh and anodized aluminum relay shell for style and durability.


  • Harnesses: 2x Super Duty OEM LED Conversion Harnesses w/ Resistors

  • Dielectric Grease: 1x Tube Morimoto LectricLube Grease


This Morimoto product includes a 2 Year limited warranty, serviced and supported by the Morimoto team in Atlanta, GA. This warranty does not cover modifications, alterations, or misuse. For additional information, Click Here.


  • Functions: 100% Retained

  • Wiring: Plug and Play

  • Hyperflash Issues: N/A


  • Ford F-250: 2017-2019 (w/o Dually)

  • Other Models: Not Compatible

  • Housings: 17-19 Super Duty OEM LED Only



  • NOTE: If you have a gas-powered Super Duty, you will need to extend the (+) input lead wire on one of the harnesses to reach the battery terminal. Diesel trucks have two batteries, and do not require any modifications.


Modernize: Designed to adapt the 2017-19 Ford F250 OEM LED headlights onto trucks that came standard with base H13 Dual Halogen headlamps, this wiring harness kit will allow you to upgrade to the most modern Super Duty look without cutting, splicing, or modifying anything on the truck's factory harness.

Plug n Play: This wiring harness kit is a seamless solution to keep your low and high beams under control on the new OEM LED lights using the original controls inside the cabin. The outputs will plug directly into the multi-pin connector on the back of each headlight from Ford.

Advanced: The unique Morimoto relay harness is designed to retain full function of the OEM headlight just like it came from the factory. No hiccups, no flickering, no problem!

OEM Grade: Aside from being ahead of the game from a technical standpoint, the Morimoto HD relay harness is also a work of art. With its wiring protected by abrasion resistant Techflex mesh sleeving and its extruded aluminum relay shell that's been anodized and laser engraved - the MotoControl Harness will look factory fresh under the hood!

Ratings & Reviews

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Works as expected


2018 Ford F250 XLT with OEM stock halogen headlights. I bought this harness to convert to a set of OEM LEDS I purchased off of a 2019 F450 DRW. This harness worked perfectly and the install was easy. I'd say it took me about 2 hours bc I took my time as to not damage anything. I was even more excited when I set my headlights to AUTO and they still worked contrary to the description of this harness. Meaning when set to auto they come on when it starts to get dark. Not the cheapest harness but made the conversion a breeze. I didn't have to use Forscan to change any settings either. Thanks.

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