View Single Post
      02-05-2012, 03:04 PM   #6
turbocomppro
Second Lieutenant
turbocomppro's Avatar
United_States
12
Rep
209
Posts

Drives: 2016 328i
Join Date: Oct 2009
Location: USA

iTrader: (0)

Couldn't you just troubleshoot it by switching the left and right bulbs?

If trouble stays on the same side, it's the ballast. If the trouble switched sides, it's the bulb.