Modern Vespa : What's the little lightbulb for?

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OP Mr Bruno UTC details Enthusiast 2013 Vespa 300 Super Sport SE (The big "V") Joined: UTC Posts: 94 Location: Chicago
OP Mr Bruno Enthusiast 2013 Vespa 300 Super Sport SE (The big "V") Joined: UTC Posts: 94 Location: Chicago	UTC quote I noticed that my headlight assembly has a smaller bulb in there. What's it used for? I've never seen it come on. Tried the high beam but the main light just gets brighter. What is it?

$@tex avatar$ TEX UTC details Molto Verboso 2010 Aprilia Mana GT, 2010 Aprilia Sport City 300 (sold), 2010 GTS 300 Super (sold), & 2007 LX150 (sold) Joined: UTC Posts: 1312 Location: Toronto, Canada
TEX Molto Verboso $@tex avatar$ 2010 Aprilia Mana GT, 2010 Aprilia Sport City 300 (sold), 2010 GTS 300 Super (sold), & 2007 LX150 (sold) Joined: UTC Posts: 1312 Location: Toronto, Canada	UTC quote It's your running light. Also a safety feature incase your main headlamp blub goes.