Morimoto HD Relay: 9005/9006/9012/H10
Questions about fitment? Live chat or call 866-235-4715
Couldn't load pickup availability
- Free shippingMost orders $500+
- 30-day returnsSee policy
- Warranty supportWe work with the maker
Questions about fitment?
Talk to a TRU specialist
We’ll help you verify fitment before you buy.
Veteran-owned · Austin, Texas · Mon–Fri 9:30a–11:00a & 1:00p–5:30p CT
Important notes before you order
- STOCK BULB SIZE: H10, 9140, 9145
- HID SYSTEMS: Low Beams, High Beams, or Fog Lights
- BI-XENON PROJECTORS?: You'll need High Beam Splitters
- PWM PULSING SIGNAL?: You'll need a Capacitor Link
- CANBUS SYSTEM?: Use Standalone Canbus or the Mopar Spec harnesses
Specifications
| Brand | Morimoto |
|---|---|
| Part number | H10 |
| Input | 1x H10 Male |
| Output | 2x 9006 Female |
| 12V Power | 1x Nickel-Plated Ring Terminal |
| Fuse | Inline 20A |
| Warranty | 2 Year |
What's in the box
| Qty | Part | Description |
|---|---|---|
| — | — | Harness: 1x HD Relay Harness |
| — | — | Note: One harness controls both headlights |
Features
- Steady Illumination: Delivering consistent voltage for flicker-free HID lighting.
- Enhanced Performance: Outperforms halogen bulbs with powerful HID illumination.
- Plug-and-Play: Easy installation with user-friendly design for enthusiasts and beginners.
- Fail-Safe Design: Individual relays per side prevent complete headlight failure.
- Universal Compatibility: Compatible with various vehicle lights – low beams, high beams, and fog lights.
Installation
Free install support from the Trucks R Us tech team, for you or your shop.
Overview
Introducing the HD Relay Harness H10 - your ultimate solution for a flawless HID lighting upgrade. Tired of flickering headlights? Our relay harness ensures a steady voltage supply directly from your car battery to HID ballasts, eliminating those annoying distractions. Designed with precision, this harness guarantees longevity and performance, preventing any compromises. Its plug-and-play setup, industry-standard compatibility, and fail-safe design make installation a breeze. Don't settle for less - invest in the HD Relay Harness and experience top-tier illumination that's both reliable and visually stunning. Upgrade now and light up the road like never before!
Reality Check: Customers often ask, Do I really need a harness? Yes! A relay harness is designed to deliver steady voltage to your HID ballasts directly from the car battery. Nobody likes a flickering headlight, so why risk it? Factory headlight outputs are really only designed to power a halogen light bulb, not an HID ballast.
Don't Skimp: As one of the most important parts in any HID lighting upgrade; don't skimp out when it comes to your wiring. It doesn't matter how good your ballasts are. how good your bulbs are. If your harness is a piece of crap: when it gives out your headlights are gonezo. The Morimoto HD Relay harness is easily worth the premium price compared to cheaper alternatives.
Plug n Play: The layout of the harness makes it easy to install. With just a few simple connections, even your mom could set this thing up! Wire lengths are long enough to be used in everything from compact cars to SUVs and it's designed to be 100% plug and play (no cutting or splicing needed). Its connections are explained in this video.
Compatible: The HD relay can be used for low beams, high beams, or fog lights on most vehicles. The harness uses industry-standard outputs for compatibility with 99% of ballasts out there, and all of the ones we offer here at TRS. Note, if your vehicle has a can-bus system or a finicky pulsed headlight circuit - check out our Standalone Canbus or the Mopar Spec harnesses.
Fail-Safe: Unlike most generic harnesses out there that rely on a single low-quality relay to power both headlights, the Morimoto Harness utilizes one relay per side- so if one did happen fail, you wouldn't be left completely in the dark. Each 40A relay is completely sealed against the elements using ribbed silicone upper and lower seals, and has an flywheel diode for back-EMF protection. Every other connection harness-wide is sealed with the proper silicone grommets. Live somewhere with weather that regularly sucks? No problem.
OEM Grade: Aside from being ahead of the game from a technical standpoint, the HD relay is also a work of art. With it's wiring protected by abrasion-resistant Techflex mesh sleeving and OEM-style relay cubes held together by a mounting bracket cut from polished stainless - the HD relay will look factory fresh under the hood!
Overview Video: Check out this helpful video to see how easy a relay harness install is!
Questions
Will this fit my truck?
Select your truck at the top of the page and the fit check will confirm it. If your exact trim is not listed, call 866-235-4715 or live chat and a fitment specialist will check it before you order.
Do you help with installation?
Yes. Our technical team helps you or your shop with installation and troubleshooting after delivery, on top of the manufacturer’s support.
What if the part has a problem?
We work the warranty claim with the manufacturer on your behalf, within the manufacturer’s warranty policy.
Can I return it?
Most items can be returned within 30 days. See our return policy for details.
No reviews for this part yet. Trucks R Us is rated on Trustpilot, Google and the BBB.