colonial-YB100

I have just aquired a 1983 Yamaha YB100 This model was never imported to Canada or North America for that matter and info is hard to find. Over the next little while I will be needing help to get this bike roadworthy. (1) Does anybody know of a link to an online parts book. Speed & Sport (USA) & CMS (Netherlands) are no help I have only been able to access Yamaha North America. (2) I am considering purchasing the Haynes manual for this bike. Is it any good. (3) I have found what looks like a resistor under the tail light. It seems to be burnt out. Anybody know where I can get one or why I need it. (4) Any good sources of parts for Yamaha in the UK other than Wemoto or Ebay. Thanks from the Colonies Edmonton, Alberta, Canada