Recently bought 1984 honda 200es. Runs great for awhile then quits firing. Ran check on cdi,spark generator,coil etc.All checks out. The only thing I can find wrong is that without the battery connected (engine running) the indicator lights go out. Turn on headlight and they come back on? Put run switch in the off position and crank the engine the neutral light will glow. Cannot find short anywhere. And let it set ten minutes and it will start right back up. Any suggestions?