funding - Conventions regarding listing grant applications/funded grants on a scientific CV

I am a young academic in a scientific field and, in the process of updating my CV, I've realized I'm unsure exactly what is appropriate to list with regard to grant applications/funded grants. Specifically, a few types of ambiguities have arisen:

1) If you receive funding from a grant but were not part of the project until after the application was funded (say your role is "Consultant" or "Statistician"), can you list this on your CV?

2) If you are listing non-funded grants that you had at least some hand in writing (say, an NIH grant that received an impact score but was not funded), but you were not the PI (say you're a co-Investigator), can you list it? Is the answer different if you had a non-investigator role such as "Statistician"?

3) Closely related to #2-- if you help with a grant that ultimately does get funded but you are not the PI or a co-I (again, suppose you're a consultant or statistician), can this be listed on your CV? Does it depend on how great of a hand you had in writing the grant?

Thanks for any input.