Whats the extra bulb for?

Doogle

Winner - POTM March 2018
Hey all,

I am looking at replacing the amber 581 indicator bulbs with silver ones to get rid of the 'fried egg' look.

The rears I can work out, but there appears to be two 581 bulbs per front headlight. Only one appears to work for indicator/hazard light so whats the other one for? I have xenons with cornering lights if that helps.

Doug

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