I bumped into this You Tube Video and while I doubt many of us are using a Sportster, the basics should apply to any bike having a more modern front end installed.
http://www.youtube.com/watch?v=rS6Ln9kGUPQ
The information is good the video and sound quality not so much.
http://www.youtube.com/watch?v=rS6Ln9kGUPQ
The information is good the video and sound quality not so much.