---
product_id: 325801704
title: "O-NEX HID Relay Harness H4 (9003 HB2) 12V 35W/55W Bi-Xenon Hi/Lo H/L Wiring Controller"
brand: "o-nex"
price: "₨1562"
currency: SCR
in_stock: false
reviews_count: 5
url: https://www.desertcart.sc/products/325801704-o-nex-hid-relay-harness-h4-9003-hb2-12v-35w
store_origin: SC
region: Seychelles
---

# 12V power input 35W/55W dual wattage support 100% waterproof & weatherproof O-NEX HID Relay Harness H4 (9003 HB2) 12V 35W/55W Bi-Xenon Hi/Lo H/L Wiring Controller

**Brand:** o-nex
**Price:** ₨1562
**Availability:** ❌ Out of Stock

## Summary

> 💡 Illuminate your drive with flawless bi-xenon brilliance!

## 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?** ₨1562 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.sc](https://www.desertcart.sc/products/325801704-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 bi-xenon control
- • **Plug & Play Precision:** Seamless OEM connection with zero splicing needed
- • **Heavy-Duty Reliability:** Built tough to withstand harsh weather and long-term use
- • **Universal Fit for HID Kits:** Compatible with both 35W and 55W bi-xenon HID setups
- • **Complete Left & Right Coverage:** One harness controls both headlights for balanced performance

## Overview

The O-NEX HID Relay Harness H4 (9003 HB2) is a robust 12V wiring controller designed for bi-xenon HID headlights. Supporting both 35W and 55W kits, it enables smooth high/low beam switching via OEM connectors without any cutting or splicing. Fully waterproof and weatherproof, this heavy-duty harness ensures reliable, plug-and-play installation for enhanced vehicle lighting performance.

## Description

HID Bi-Xenon Relay HarnessThis item is for one Set HID Bi-Xenon Relay harness. A bi-xenon relay is designed only to be used with bi-xenon (dual beam) hid bulbs. This Relay Harness has two connector that connects to both side of your headlight. The purpose is to control the switching of your high and low beam functions. The harness connects to one side of your vehicle's factory OEM socket and does not require any cutting or splicing, using the OEM connections will allow you to turn on and off your headlights as well as high/low switching using your factory light switch. Features & Specs: - Heavy Duty Relay Harness. - Low & High Beam Functionality. - 100% water proof, weather proof! - Easy to install, just plug and play. - Advanced Relay Control Box. - High Quality Guaranteed - Input Voltage: DC 12V - For 35W/55W Hi/Lo Bi-Xenon type HID installation only. Installation Instruction1. Connect red wire straight to the battery positive pole. 2. Plug in long and short male connectors into the right and left side ballast. 3. Connect the small rectangle wire to the HID light bulb. 4. Plug in the last single female connector to one of your cars/trucks stock headlight connector. ** Note that the red wire is connected to positive pole of battery and two black wires to negative pole & ground individually.

Review: Perfect, exact, replacement - 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: buen precio y calidad - 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 |
| Brand | O-NEX |
| Brand Name | O-NEX |
| Brightness | 1000 Lumen |
| Colour Temperature | 6000 Kelvin |
| Colour temperature | 6000 Kelvin |
| Customer Reviews | 4.1 out of 5 stars 468 Reviews |
| Fit Type | Vehicle Specific Fit |
| Fit type | Vehicle Specific Fit |
| Global Trade Identification Number | 00732341334307 |
| Included Components | HID Bulbs |
| Included components | HID Bulbs |
| Item height | 2 inches |
| Light Color | Red |
| Light Source | Xenon |
| Light source type | Xenon |
| Manufacturer | O-NEX |
| Manufacturer Part Number | HID-RLH4 |
| Number of Pieces | 2 |
| UPC | 732341334307 |
| Voltage | 12 Volts |
| Wattage | 35 watts |

## Product Details

- **Brand:** O-NEX
- **Light source type:** Xenon
- **Included components:** Relay harness
- **Wattage:** 35 watts
- **Fit type:** Vehicle Specific Fit

## 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/51-F2FngkmL.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/51XsUbGR+zL.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/61PL0IA9eBL.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/711Wd4q4CjL.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/714buQucS5L.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Perfect, exact, replacement
*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

### ⭐⭐⭐⭐⭐ buen precio y calidad
*by C***I on 28 July 2025*

parece de buena calidad y el precio es barato

### ⭐⭐⭐⭐⭐ Cheap and awesome
*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.

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**Shop now:** [https://www.desertcart.sc/products/325801704-o-nex-hid-relay-harness-h4-9003-hb2-12v-35w](https://www.desertcart.sc/products/325801704-o-nex-hid-relay-harness-h4-9003-hb2-12v-35w)

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*Product available on Desertcart Seychelles*
*Store origin: SC*
*Last updated: 2026-01-27*