Those are error free bulbs and you can see resistors on them which draw extra current to avoid errors when fitted as sidelights. For interior lamps there is no error monitoring so there is no need for error free bulbs and I would strongly advice not to use error free bulbs as the resistors create large amount of extra heat and some people have reported them melting plastic holders/lenses. At least keep an eye of them and don't leave them on for long period s of time.
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Currently 8less
2011 Q7 S Line 3.0TDI, 2016 Tesla Model S 90D
8 history:
2006 A8 Sport 4.2TDI quattro SOLD,
1997 S8, reached end of life with gearbox failure
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