Regarding turn signals and whatnot: I'm looking at rigging up the same for my bike. I have some Mini Bee lights in amber and red on the way, and I'll be getting out my soldering iron and going to town in a while.
For right now, since it isn't yet street legal per the latest laws, I've been just riding ol' Tempus around in the mobile home park I live in. She's been tweaked and tuned and is humming about as well as I can possibly get her to. And during the latest ride I encountered a fellow resident who built and was riding his own motorized mountain bike. It had an HT with an Angle-Head and the usual other standard kit parts. From what I could take in at a glance he seemed to have done a good job with the assembly. I plan to try to get his attention at some point just to learn more about the man.
So, fellow Indy motorbiker, in the off chance that you may already belong to this forum and may also be reading this, if you're the guy in the Indianapolis area with the newly-motorized mountain bike who lives in the Skyway mobile home park, then I am the guy with the red vintage-looking balloon-tire motorbike who's been cruising in laps and stopping to adjust things. Don't be afraid to ride up and say "Hi". Join our noisy, smokey, buzzing little fellowship.