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MotoControl Bi-Xenon: H4/9003

2 Reviews

Brand: Morimoto




PART #: 1 x H60

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Introducing the MotoControl Bi-Xenon Relay Harness – your ultimate solution for flawless HID lighting performance! Tired of flickering headlights? Our harness ensures a steady voltage supply directly from your car battery to HID ballasts, eliminating any worries. With seamless plug-n-play installation, this third-generation 8-Pin Relay boasts a built-in capacitor for smooth transitions between modes, even during signal gaps. Universally compatible and designed to fit vehicles old and new, it's the answer to hassle-free, professional-grade HID lighting. Upgrade now and experience the difference – no more compromises on safety and style!


  • Steady Voltage: Ensure consistent power to HID ballasts, eliminating flickering.
  • Plug-and-Play: Easy integration without complicated wiring.
  • Precise Control: Manage beams with your car's stalk.
  • Advanced 8-Pin Relay: Seamlessly handles signal gaps.
  • Universal Compatibility: Works with all vehicles.


  • Harness: 1x H4 MotoControl Bi-Xenon Harness

  • Note: One harness controls both headlights


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.


  • Input: 1x H4 Male

  • Output: 2x 9006 Female (Ballasts), 2x Molex (High Beams)

  • 12V Power: 1x Nickel-Plated Ring Terminal

  • Fuse: Inline 25A


  • Fitment: H4/9003

  • HID Systems: Bi-Xenon Projectors & Telescoping Hi/Lo HID Bulbs

  • HALOGEN BULBS: Not Compatible

  • OTHER BRANDS: May need High Beam Adapters


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 bub, not an HID ballast.

Under Control: Morimoto makes it easy with the MotoControl H4/9003 Bi-xenon relay harness. Designed to be completely plug-n-play; it's a seamless solution to keep your low and high beams under control with the original stalk inside the car. Works perfectly with Bi-xenon projector retrofits and Hi/Lo HID systems.

Advanced: The third generation MotoControl 8-Pin Relay has a tiny built-in capacitor that stores and releases it's charge between mode changes. So even if there's a short gap between the low and high beam signals from your car, your HID's will run smoothly. It's sealed weather-pack connector is new for 2014 and is a major reliability upgrade compared to other bi-xenon harnesses.

Universal: This harness is designed to work with both positive and ground switched headlight circuits, making it universally compatible with all vehicles no matter new or old.

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).

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 it's extruded aluminum relay shell that's been anodized and laser engraved - the MotoControl Harness will look factory fresh under the hood!

Ratings & Reviews

2 reviews

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by -

The harness is pretty high quality, but I wish one side of the harness was longer, I had to trim some of the heat shrink tubing to get more slack and also remove some electrical tape off my oem harness, also mounting the relays sideways was my only option. TRS please give ppl the option to cut these harness to proper length, crimp them and install the connectors, and please at least a foot longer.


5 years


I purchased and installed a d2s universal kit with this relay harness included. It has performed 100% until this evening, 5 years and 2 months later it developed a short in the harness. I have ordered a replacement, so I will keep my relay box as a spare since it still works just fine.

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