Correct answer
Use a compatible bulb and preserve the required lighting characteristics.
Use a bulb compatible with the headlamp and manufacturer specifications, preserving the approved lighting and required characteristics. Paired lights must maintain the same colour and intensity. Replacing both bulbs together may be maintenance advice; the definition of a light source does not impose a universal duty to replace both.
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Fit any bulb that fits, even if it changes the light type.
Mix technologies without checking compatibility or approval.
Use a compatible bulb and preserve the required lighting characteristics.
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