if you post a pic it might help, also depends on your application.
on mine, there are two little bits that stick out right next to each other that face towards my engine (2t). i have one blocked off and the other goes to my dizzy advance.
that said there are many more people out there with heaps more knowledge than me who will probably be able to tell you where each one goes exactly.
my recommendation: post a pic of your engine bay and the carby cos without knowing the application there is only so much advice people can give.
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