Correct answer
Avoid touching the bulb glass with bare fingers.
Avoid touching the glass of the halogen bulb with bare fingers. Grease and dirt can remain on the glass and impair operation; follow manufacturer instructions using appropriate protection and clean materials. The bulb glass is not the headlamp’s reflective surface. Procedures differ: xenon, LED and assemblies not user-replaceable may require professional work. Use the bulb type and specification approved for the headlamp.
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Clean the glass by rubbing it with bare fingers before fitting.
Fit any bulb that fits, even if it is a different type.
Avoid touching the bulb glass with bare fingers.
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