It may or may not need signals, kinda depends on whatever clown inspects the bike; that probably changes from state to state. Its no biggie, you can get it inspected and if it fails you have a month to fix the problems but can still register and insure the bike. That really is not a concern right now. Right now its the electrical and fuel system, then other mechanical issues.....as others have stated.
Get her running good first, leave the cosmetics as things to slowly improve over time. Enjoy the experience for what it is....like sweatmachine said, its often just as gratifying as actually riding the thing.....sometimes even more so, depending on the effort you make. Its funny how things work.
Get a Haynes or Climer manual for the '72 Cb750. Search for vintage Honda forums or even specifically CB750 forums, join them as well. I know some forums have workshop manuals available for viewing or even download. Try to read the forums and search for your answers before you ask, often the answers are all there, you just need to look in the right spots. Other members will appreciate it when you ask a question that is somewhat unique and not something that everyone else asks on day one. I am also a member of a wonderful Honda C70 forum that I found on yahoo groups, also a Kawasaki W650 forum on yahoo groups as well. Both are specific to those particular makes and models and have helped me tremendously with each particular motorcycle.
