This diagram corresponds to the earlier versions (70s) of 70cc and 65cc Honda motorcyles.
I have done complete electric setup on a Hero 70 recently. I searched too but couldnt find anything related to what I needed. According to one of my guru g and I quote him,"Ye majay gamay model hotay hain, in ka na sar hota hay na payr, wiring diagram kis ne deni." Manual tau bhool hi jayain bhai.
However, A little basic theory can get you through. Good Luck !!