Thread: DIY-Rear fog light modification
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      10-21-2016, 08:57 AM   #73
HawaiianStig
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Drives: 2014 MSport 550i Carbon Black
Join Date: May 2016
Location: Florida

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I got the answer from ECS Tuning chat.

I gave them my VIN and they said I needed the switch for Xenon lights.
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