Leave the bulb locked into the headlight fixture until you remove the socket
from the bulb - there's usually a locking tab on the socket.
BTW, the SilverStar bulbs are a marketing scam; cost twice as much, draw more
current, produce more heat, and the actual visible useful light produced isn't
quite as much as a stock bulb with a clear glass envelope. They appear brighter
only because some of the most useful yellow frequency light is filtered out thru
the blue-tinted glass, promoting glare that is perceived as brightness by the
human eye; a light meter tells a different story.
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