---
product_id: 293057359
title: "O-NEX HID Relay Harness H4 (9003 HB2) 12V 35W/55W Bi-Xenon Hi/Lo H/L Wiring Controller"
brand: "o-nex"
price: "€ 35.46"
currency: EUR
in_stock: true
reviews_count: 5
category: "O Nex"
url: https://www.desertcart.hr/products/293057359-o-nex-hid-relay-harness-h4-9003-hb2-12v-35w
store_origin: HR
region: Croatia
---

# Heavy-duty 12V relay power Bi-Xenon Hi/Lo dual beam control Universal left/right side harness O-NEX HID Relay Harness H4 (9003 HB2) 12V 35W/55W Bi-Xenon Hi/Lo H/L Wiring Controller

**Brand:** o-nex
**Price:** € 35.46
**Availability:** ✅ In Stock

## Summary

> ⚡ Illuminate your drive with power and precision!

## Quick Answers

- **What is this?** O-NEX HID Relay Harness H4 (9003 HB2) 12V 35W/55W Bi-Xenon Hi/Lo H/L Wiring Controller by o-nex
- **How much does it cost?** € 35.46 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/293057359-o-nex-hid-relay-harness-h4-9003-hb2-12v-35w)

## Best For

- o-nex enthusiasts

## Why This Product

- Trusted o-nex brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Dual Beam Mastery:** Effortlessly switch between high and low beams with precision Bi-Xenon relay technology.
- • **Plug & Play Power Boost:** Seamlessly supports both 35W and 55W HID kits for ultimate brightness control.
- • **Upgrade Your Ride Overnight:** Affordable, fast shipping means you’re back on the road with premium lighting in no time.
- • **Universal Fit, Double Impact:** One harness connects both headlights, simplifying installation and reducing clutter.
- • **Built to Last, Drive with Confidence:** Heavy-duty wiring design ensures durability and reliable performance under all conditions.

## Overview

The O-NEX HID Relay Harness H4 (9003 HB2) is a robust 12V wiring controller designed for 35W/55W Bi-Xenon HID kits. Featuring dual beam Hi/Lo functionality, it supports both left and right headlights with a single heavy-duty harness, ensuring reliable, high-performance lighting upgrades for your vehicle.

## Description

International products have separate terms, are sold from abroad and may differ from local products, including fit, age ratings, and language of product, labeling or instructions.

Review: Replaced a five year old dead one that started shorting out for one headlight then altogether. 5 start for being able to get a random part, that works perfectly, overnight, for $10
Review: parece de buena calidad y el precio es barato

## Features

- H4 9003 HB2 Bi-Xenon (Hi/Lo) Battery Wiring Harness
- Bi-Xenon HID Relay Harness, works with both 35w and 55W HID Kit, heavy duty design.
- Dual Beam High and Low (Hi/Lo H/L) functionality for most after-market hid.
- 1 Harness will connect to both left and right side
- For 35W/55W Hi Lo Bi-Xenon type HID installation only.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B01CTIDBJ2 |
| Auto part position | Front |
| Automotive Fit Type | Vehicle Specific Fit |
| Best Sellers Rank | #226,749 in Automotive ( See Top 100 in Automotive ) #641 in Car Electrical Wiring Harnesses |
| Brightness | 1000 Lumen |
| Colour temperature | 6000 Kelvin |
| Department | unisex-adult |
| Global Trade Identification Number | 00732341334307 |
| Item model number | H4 |
| Light Output Maximum | 3500 Lumens |
| Light colour | Red |
| Manufacturer | O-NEX |
| Number of pieces | 2 |
| Product Dimensions | 17.78 x 5.08 x 5.08 cm; 159 g |
| UPC | 732341334307 |

## Product Details

- **Brand:** O-NEX
- **Fit type:** Vehicle Specific Fit
- **Included components:** HID Relay Harness, Bulbs
- **Light source type:** HID
- **Wattage:** 35 watts

## Images

![O-NEX HID Relay Harness H4 (9003 HB2) 12V 35W/55W Bi-Xenon Hi/Lo H/L Wiring Controller - Image 1](https://m.media-amazon.com/images/I/310huaKKnnL.jpg)
![O-NEX HID Relay Harness H4 (9003 HB2) 12V 35W/55W Bi-Xenon Hi/Lo H/L Wiring Controller - Image 2](https://m.media-amazon.com/images/I/419Zx7iVU9L.jpg)
![O-NEX HID Relay Harness H4 (9003 HB2) 12V 35W/55W Bi-Xenon Hi/Lo H/L Wiring Controller - Image 3](https://m.media-amazon.com/images/I/41vLETqCkSL.jpg)
![O-NEX HID Relay Harness H4 (9003 HB2) 12V 35W/55W Bi-Xenon Hi/Lo H/L Wiring Controller - Image 4](https://m.media-amazon.com/images/I/41yCjkM2SGL.jpg)
![O-NEX HID Relay Harness H4 (9003 HB2) 12V 35W/55W Bi-Xenon Hi/Lo H/L Wiring Controller - Image 5](https://m.media-amazon.com/images/I/41yGuVwGECL.jpg)

## Questions & Answers

**Q: I need a harrness to hook up to H11**
A: H11 will work this harness but for 80's model 3 prong light switch systems

**Q: Does this keep the low beam on when high beams are turned off? My 99 4runner automatically turns off low beam when high beam is switched**
A: no, it is only for bi-xenon hid kit relay replacement.

**Q: Will these work on led bulbs as well? having drl issues**
A: no, it does not fix drl issue. not for LED Bulbs.

**Q: I have fahren 9005/hb3 led headlight bulbs, 60w  will these work with this kit (96 ciivcex 2dr)?**
A: NO.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by S***L on 23 May 2024*

Replaced a five year old dead one that started shorting out for one headlight then altogether. 5 start for being able to get a random part, that works perfectly, overnight, for $10

### ⭐⭐⭐⭐⭐ Review
*by C***I on 28 July 2025*

parece de buena calidad y el precio es barato

### ⭐⭐⭐⭐⭐ Review
*by V***A on 25 April 2020*

Have been using it for over a month now and it lights up every time. Really compact and easy to install even for DIYers. Material quality exceeds my expectations.

## Frequently Bought Together

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*Product available on Desertcart Croatia*
*Store origin: HR*
*Last updated: 2026-03-20*