After many years searching for an XS650 in Mexico in decent condition(they weren't originally sold here). I've finally found one thats close to where I live and in good condition. However it doesn't have an Alternator, I'm sure this question has been asked a thousand times but English being my second language and my "extensive" (read: zero) electrical knowledge, i couldn't find anything usefull. What route should I take to replace it? look for an original one or change it to a more modern system? If so, which one? I'm new to forums in general and if I'm breaking any rules by posting this please let me know. Thanks!