Unfortunately sethne, the color codes don't always match between whats on the bike.... and whats on the wiring diagram. But I'll give it a go for you , if you want to check that headlight hook up.... and I'd confirm this with a test light or a multi meter by operating the high and low beam switches......
Blue wire at the headlight - High beam
Amber or orange wire at headlight- headlight ground
Black wire at headlight- Low beam
And I know, black is usually ground. But not in this case. At Least not according to the diagram. Which could have led to your confusion..... as well as mine.
Here is a better example. Disregard these color codes...... but the terminal positions on the plug and headlight are correct .
http://www.nls.net/mp/volks/schem/headlite.gif