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Old 09-23-2007, 01:12 PM   #44
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Join Date: Aug 2003
Location: Burke, VA
Posts: 7,635
My Ride: 2003 330i
They draw very little current. you can use a single relay for both. If one side is dimmer then the other, then you might have a bad ballast. try swapping them and see if the issue moves to the other side. No reason to get a headlight error unless you forgot to plug something up.
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