A DIY for replacing the headlight ballast on a BMW E90 3-series. Car used was a 2008 BMW E90 335i sedan. This video can also help with any E90, E91, E92, or E93 3-series sedan, wagon, coupe, or convertible.

E39Source WEBSITE: http://www.E39Source.com

BMW M3Source: http://www.youtube.com/E65Source

BMW E46Source: https://www.youtube.com/user/E46Source