Hello from Ireland !

Hi all. Just picked up a 1989 XT500S from Germany - have been wanting one of these for years.  Most of my experience though is with BMW (airheads through to latest liquid cooled version). While the bike I have gotten is running ok I want to replace some parts.  Aside from 6V / 12V systems are the parts readily interchangeable between old and new models ?  I have the owner / service / parts manual for a 1981 XT500 but cannot locate same for the later 12V variants including the XT500S model.  


Any help / assistance would be greatly appreciated ...... thanks.