I don't know that this will help you, but my Maxi has a brown (ground) wire going into one side of the back of the headlight, and a blue wire going into the other side. One wire was cut once, and I had a lot of problems. If only one wire is plugged in, various other problems happen.
Then only thing I have to say, I guess, is that for max. performance, don't have any wires that aren't plugged into anything, and make sure your grounds (usually brown) are touching SOMETHING.