What year is this rear end? and where could I find a axle and 2 hubs and axle nuts.

Hey guys i’m starting a refurbishment of a 1980 atc 110 , i have a question if anyone could help me, i need a new wiring harness and i was wondering would a wiring harness off a later model 110 or even a 185 or a 200 be much different or could it be used. I’m in Australia so a lot of the...

recently took apart the carb and cleaned what i could installed eveything back in and it starts fine but wont idle and when its running it cuts in and out of having power please help