Hey all. 1970 Yamaha AT1B. Last week I was out and rode about 12 miles, pulled into a store and shut the bike off. Got back on and used the electric start 2 times to get the bike started. Battery power was pretty low. Pulled out and went about half a block and the bike died. I figured I had killed the battery using the starter. No lights, neutral light etc. Went out and bought a new battery over the weekend and installed it. Still no lights or anything. Totally dead. Any suggestions on what to look for, where to start? I'm pretty clueless about the electrical system so any help would be greatly appreciated.