[Richard L]

Originally Posted by Crazy AWD

Richard,

Take a look at the N54 tech docs. The fuel system really has a lot in common with a diesel fuel system.

http://www.e90post.com/forums/showthread.php?t=38856

I had a quick browse in that forum, threis a great deal of WI interest there. I check with some old info on the brown wire of the injetcor, it is switch to ground or negative switch. So it is correct to leave the green wire as it is and link to PWM(-).