In another thread, OCLV described a way to change out the factory bulbs
(9006 1000 lumins) for 9005's 1700 lumins by modifying the bulb slightly, a great idea but you would have to change out the factory plug for the 9005 plug or buy an adaptor.
The link below goes one step further by doing another simple modification to the bulb which enables you to use the stock plug.
Check it out.
http://www.bmwe34.net/E34main/Upgrade/More_light.htm
(9006 1000 lumins) for 9005's 1700 lumins by modifying the bulb slightly, a great idea but you would have to change out the factory plug for the 9005 plug or buy an adaptor.
The link below goes one step further by doing another simple modification to the bulb which enables you to use the stock plug.

http://www.bmwe34.net/E34main/Upgrade/More_light.htm
Last edited: