Hello I am new to motorcycles and recently purchased a 1982 XS650 heritage special. When I bought it he battery was weak, so I bought a new battery after a few days the battery was dead. After looking on site and talking to others I replaced the brushes and charged the battery back up. Worked great for 4 days now dead battery. It looks like I am in need of regulator rectifier, but I don't haves manual to let me know what to look for. Any suggestions? Am I going in the right direction?