Purchasing H4 LED Bulbs
Compatibility:

Vehicle Model: Ensure the H4 LED bulbs are compatible with your vehicle. Check the owner's manual or consult the manufacturer.
Socket Type: Verify that your vehicle uses H4 (9003) bulbs, which are dual-beam bulbs (high and low beam in one bulb).
Brightness and Color Temperature:

Lumens: Look for bulbs with a higher lumen count for better brightness. Typically, 6000-8000 lumens per pair is adequate.
Color Temperature: A color temperature of 6000K (bright white) is common and provides good visibility without being too blue.
Quality and Durability:

Brand: Opt for reputable brands like Novsight for quality assurance.
Heat Dissipation: Choose bulbs with good heat dissipation features, such as built-in fans or aluminum housings, to prevent overheating.
Lifespan: Look for bulbs with a longer lifespan, typically rated around 30,000-50,000 hours.
Beam Pattern:

Ensure the bulbs provide a focused beam pattern to avoid glare for oncoming traffic. Look for bulbs with a clear cut-off line.
Additional Features:

CANbus Compatibility: Some vehicles may require CANbus-compatible bulbs to prevent flickering or error messages.
Waterproof Rating: A rating of IP67 or higher ensures the bulbs are resistant to water and dust.
Installation Advice
Tools and Preparation:

Gather necessary tools: screwdriver, gloves, and possibly a socket wrench.
Disconnect the vehicle's battery to prevent electrical shocks.
Accessing the Headlight Assembly:

Open the hood and locate the headlight assembly.
Remove the dust cover or protective cap behind the headlight.
Removing Old Bulbs:

Disconnect the power connector from the old bulb.
Release the bulb's retaining clip or twist the bulb to remove it, depending on your vehicle's setup.
Installing the New LED Bulbs:

Insert the new H4 LED Headlight bulb into the socket, ensuring it's seated properly.
Secure the retaining clip or twist the bulb to lock it in place.
Reconnect the power connector to the new bulb.
Testing and Adjustments:

Reconnect the vehicle’s battery.
Turn on the headlights to test the new bulbs. Check for proper functioning of both high and low beams.
Adjust the beam pattern if necessary to ensure it's focused and not causing glare.

By considering these factors and following the installation steps, you can upgrade your vehicle's headlights to H4 LED bulbs effectively.

If you are not sure whether the H4/HB2/9003 will be suitable for your vehicle or not, you can click the "By Vehicle" catalog at the top of the page to help you with that, or check with Novsight vehicle bulb finder on the top bar.

Contact us: service@novsights.com
H4 9004 HB2 Installation guides

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N60 Ultra Series | H4 HB2 9003 LED Bulbs Super Bright 200W 40000LM 6500K White | 2 Bulbs - NOVSIGHTN60 Ultra Series | H4 HB2 9003 LED Bulbs Super Bright 200W 40000LM 6500K White | 2 Bulbs - NOVSIGHT
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N52 Plus Series | H4 9003 LED Bulbs Automotive-Grade Chip 100W 20000LM 6500K White | 2 Bulbs - NOVSIGHTH4 LED headlight bulbs with perfect beam pattern
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N62 Ultra Series Wireless | H4 HB2 9003 LED Bulbs Automotive Specific Chipsets 100W 22000LM 6500K White | 2 Bulbs - NOVSIGHTN62 Ultra Series Wireless | H4 HB2 9003 LED Bulbs Automotive Specific Chipsets 100W 22000LM 6500K White | 2 Bulbs - NOVSIGHT
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N30 Standard Series Wireless | H4 9003 LED Bulbs 1:1 Integrated Design 55W 12000LM 6500K White | 2 Bulbs - NOVSIGHTH4 LED headlight bulbs with customized ZES LED chips
N66 Pro Series Wireless | H4 9003 HB2 LED Bulbs Perfect Beam 80W 18000LM 6500K White | 2 Bullbs - NOVSIGHTN66 Pro Series Wireless | H4 9003 HB2 LED Bulbs Perfect Beam 80W 18000LM 6500K White | 2 Bullbs - NOVSIGHT
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N11 Standard Series | H4 9003 HB2 LED Bulbs Cost-Effective 60W 13000LM 6500K White | 2 Bulbs - NOVSIGHTN11 Standard Series | H4 9003 HB2 LED Bulbs Cost-Effective 60W 13000LM 6500K White | 2 Bulbs - NOVSIGHT
N61 General Series | H4 9003 LED Bulbs Stable Output 60W 13000LM 6500K White | 2 Bulbs - NOVSIGHTN61 General Series | H4 9003 LED Bulbs Stable Output 60W 13000LM 6500K White | 2 Bulbs - NOVSIGHT
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H4 LED headlight bulbsH4 LED headlight bulbs installation steps
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N67EP Series | H4 9003 HB2 LED Headlight Bulbs Eco-friendly Sustainability Extremely Brighter Light 140W 32000LM | 2 Bulbs - NOVSIGHTN67EP Series | H4 9003 HB2 LED Headlight Bulbs Eco-friendly Sustainability Extremely Brighter Light 140W 32000LM | 2 Bulbs - NOVSIGHT
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N67 Pro Series | H4 9003 HB2 LED Bulbs Intelligent Cooling System 140W 30000LM 6500K | 2 Bulbs - NOVSIGHTN67 Pro Series | H4 9003 HB2 LED Bulbs Intelligent Cooling System 140W 30000LM 6500K | 2 Bulbs - NOVSIGHT