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How to Install an H4 LED Bulb

Model: (Various brands) Various
Part: Light bulb

Video tutorial

How do you correctly install an H4 LED bulb? First, remove the two springs that hold the halogen bulb holder in place, then take out the halogen bulb, as the LED bulb has its specific collar shape. Remove the collar around the LED bulb and place it back in the headlamp reflector.

Close the springs and insert the LED bulb by screwing it in, ensuring it rests on its support. You will need to find a secure place to connect the cable and transformer that come with the bulb, but there is usually a rubber cap behind the reflector where these components can be conveniently placed.


Updated on 12 October 2026 by ScegliAuto


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by ScegliAuto

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