Hey Bob,
Welcome to MBc and the world of Motored Bikes! Keep in touch--I'd like to know how your build is going... Also, I should mention that it's proper protocol to post in the "Introduce Yourself" forum-section first. After that you're free to post wherever. I'm sure you'll find all the help you need here on this site, as there are many cool MB riders here in the US as well as overseas who love the same hobby we do.
As for my MB, I ride a 2-stroke HT (Happy Time) motor on a Schwinn Jaguar (cruiser style). I've only had it since mid-March, but I've put close to 1,000 miles on it. I have a blinking backlight and a headlight attached for night-riding; however, most of my riding is done during the day. Thus far, I have not had any problems with Johnny Law in the St. Cloud area, and I've ridden by/had them ride by me quite a few times. I also do not have a horn or any turn-signals or anything like that, but I'm sure we need to check up on the correct legalities of that...
Here's what I found by searching around a little on MB laws in MN. This comes from a "As a Trooper" website:
http://hometownsource.com/index.php?option=com_content&task=view&id=5023&Itemid=77
So, I guess what this tells us is that we need to obtain the literature and that it's not on the Internet...
Anyways, let me know what kind of kit you bought! Is it a frame-mount or a friction-drive that mounts over the back wheel...? What kind of bike are you installing it on?
Jared