





⚡ Illuminate your drive with precision and power!
The O-NEX HID Relay Harness H4 (9003 HB2) is a robust 12V wiring controller designed for 35W and 55W Bi-Xenon HID kits. It features dual beam Hi/Lo functionality, fits both left and right headlights, and ensures a reliable, vehicle-specific installation backed by a 1-year warranty.











| ASIN | B01CTIDBJ2 |
| Auto Part Position | Front |
| Best Sellers Rank | #84,225 in Automotive ( See Top 100 in Automotive ) #332 in Automotive Replacement Electrical Wiring Harnesses |
| Brand | O-NEX |
| Brand Name | O-NEX |
| Brightness | 1000 Lumen |
| Color Temperature | 6000 Kelvin |
| Customer Reviews | 4.2 out of 5 stars 492 Reviews |
| Fit Type | Vehicle Specific Fit |
| Global Trade Identification Number | 00732341334307 |
| Included Components | Relay harness |
| Item Height | 2 inches |
| Light Color | Red |
| Light Source | Xenon |
| Light Source Type | Xenon |
| Manufacturer | O-NEX |
| Manufacturer Part Number | HID-RLH4 |
| Manufacturer Warranty Description | 1 Year Warranty from the date of purchase |
| Number of Pieces | 2 |
| UPC | 732341334307 |
| Voltage | 12 Volts |
| Wattage | 35 watts |
S**L
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
G**S
Ok
Good for the money Relay has limited life with 50w
E**R
Buen producto
Instalación sencilla: El arnés de relé O-NEX es muy fácil de instalar. Simplemente conecta los cables a los conectores OEM de tu vehículo y listo. Fiabilidad: El arnés de relé está fabricado con materiales de alta calidad y está diseñado para durar. Compatibilidad: El arnés de relé es compatible con la mayoría de bombillas HID de 35W y 55W. Conclusión: Buena opción: El arnés de relé O-NEX es una buena opción para los conductores que buscan una instalación sencilla y fiable para sus bombillas HID. Detalles adicionales: El arnés de relé O-NEX está diseñado para controlar las funciones de haz alto y bajo de las bombillas HID. Se conecta a los conectores OEM de tu vehículo, lo que significa que no es necesario cortar ni empalmar ningún cable. El arnés de relé está fabricado con materiales de alta calidad, como conectores de cobre y un cable de 100% resistente al agua. Es compatible con la mayoría de bombillas HID de 35W y 55W, incluidas las bombillas de repuesto O-NEX.
R**A
Great product
The relay did fit on Toyota Etios and works as expected.
D**M
**** EXTREME FIRE RISK ****
****EXTREME FIRE HAZARD***** DO NOT BUY! Two 35 watt HID conversions from DDM tuning is all it took to absolutely nuke this thing. The lowest power HIDs available. It's made FAR too cheap and does not have the proper wiring and circuitry to handle the current. This is after less than 2 hours of headlight usage!!!! This WILL burn someone's car to the ground. Fortunately I had my air on fresh air and picked up the scent very close to the moment the fire started. All other wiring is intact and I, being cautious and weary, swapped the fuse down to a 15A and that was still intact.
B**S
1 of 2 harness
I've boughten this item a couple years ago and has been working great for my '01 CRV, I recently moved that kit to a '04 Sequioa. I needed a new kit for my CRV. This second harness the wires are shorter then the other one I bought 2 years ago The fused power connection is about 4 inches shorter and causes the extension to the other headlight to be shorter distance. But still this new harness works just as good as the older one.
L**A
Good decent product
Ive bought before and it last about 2 years received a new one but was broken luck of the draw
R**L
Buen producto
Mejor de lo que esperaba
Trustpilot
3 days ago
4 days ago