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Old 11-16-2016, 04:48 PM   #3
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Join Date: Jan 2014
Location: Albuquerque, NM, USA
Posts: 649
Porsche bulbs are same as all German cars and are NOT "reverse polarity."

Center post is positive, side shell is negative.
Kent Christensen
2001 Boxster
2007 GL320 CDI
3 BMW motorcycles
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