I am not sure how parts are sold for the charging system (sorry, expertise is in automotive diagnostics) but there are going to be some brushes, and other parts that need eyeballed... with cars, if one item is tired, most of the others usually are too and we replace the entire unit. I am sure that there are a few with exp on these bikes here
what I did find is on these bikes, it appears the rectifier assy is on the left side of the bike in the rear sidepod.. Parts Fiche
when you reconnect the battery, do you see a small spark? or put a test light in series with the cable, if the light comes on, there is a draw..
unplug the rectifier assy and see if the light goes out... if it does, you will probably need a new assy ($140 new but used may be an option)
one caveat is that a single diode failure will not usually keep the battery from charging, it will just drain the battery over night. Still need to verify system voltage with bike running.. (12.7-13.5 is pretty normal)
what I did find is on these bikes, it appears the rectifier assy is on the left side of the bike in the rear sidepod.. Parts Fiche
when you reconnect the battery, do you see a small spark? or put a test light in series with the cable, if the light comes on, there is a draw..
unplug the rectifier assy and see if the light goes out... if it does, you will probably need a new assy ($140 new but used may be an option)
one caveat is that a single diode failure will not usually keep the battery from charging, it will just drain the battery over night. Still need to verify system voltage with bike running.. (12.7-13.5 is pretty normal)