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H4: GTR Bi-Xenon Harness

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Brand: GTR Lighting




PART #: 1 x GTR.H033


Introducing the GTR Lighting H4 Hi/lo Bi-Xenon Harness – your key to unlocking unparalleled lighting performance! Don't settle for subpar illumination. Our harness is your strong foundation, ensuring your lighting works flawlessly. Experience consistent, brilliant output even in the harshest conditions. Simplify dual-beam control with the GTR Lighting kit. Elevate your HID bulbs' performance effortlessly with an easy-to-install wiring harness, unveiling a new realm of lighting power. Take charge of your bulb's position within the headlight housing – seamlessly transition between high-beam and low-beam modes using the robust electro-magnet mechanism. Installation is a breeze with our 100% plug-n-play design – no cutting or splicing needed. Unleash the full potential of your headlights with GTR Lighting's waterproof, universal harness. It's your upgrade solution, whether you drive a classic car or a modern marvel. Illuminate the road ahead like never before – choose GTR Lighting for the ultimate lighting experience!


  • Reliable Lighting: Ensure optimal performance with the GTR Lighting H4 Hi/lo Bi-Xenon Harness.
  • Consistent Output: Enjoy steady, bright lighting in all conditions.
  • Dual-Beam Control: Effortlessly manage HID bulbs with easy installation.
  • Adaptive Positioning: Transition seamlessly between high and low beams.
  • Hassle-Free Install: Plug-n-play design, no cutting required.


  • Harness: 1x Bi-Xenon Harness

  • Note: One harness controls both headlights


This GTR Lighting product includes a 2 Year limited warranty, serviced and supported by the GTR Lighting team in Atlanta, GA. This warranty does not cover modifications, alterations, or misuse. For additional information, contact us. Refunds Not Accepted.


  • 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

A Strong Foundation: Without a reliable relay harness, your lighting simply won't work no matter how good your bulbs, assemblies, or other associated parts. This H4 Hi/lo GTR Lighting Bi-Xenon Harness smooths voltage and ensures a consistent and bright output even in the harshest conditions.

Simplifying Dual Beam: Want to run your HID bulbs with total dual-beam control? This kit from GTR Lighting allows you to do just that with a simple and easy to install wiring harness that unleashes a whole new level of lighting from your HIDs.

What's Your Favorite Position: This Dual Beam harness allows you to control the physical position of the bulb within the headlight housing. When you hit the high-beams it will move the bulb closer to the reflector housing via a super strong electro-magnet. When you disengage it returns to its normal low-beam position

Installation: This kit is 100% plug-n-play without any splicing, cutting or hacking of your current wiring. On the back of the bulb, you'll find 3 connectors. Two are for power and the third is for this harness. Without it, your HIDs will only run in low-beam mode.

Durable: This entire system is 100% waterproof and that's a huge step forward to many of the alternatives on the market. In addition, it's 100% universal for positive or negative circuits. Classic car or Modern marvel, this harness will work.

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