I just bought a bike. I bought a 1978 KZ 650. Wow it is fast. Don't tell Colleen.it only has 14k miles and it is in pretty good condition. It has one problem with the headlight taking too much power and the turn signals stop flashing. The signals work in the day very well and I can only ride in the day till I pass my test so it is not a problem. I have ordered a ignition switch after ohming out many wires. I hope the switch does repair the problem.
I will post a picture of it once I take on.