I have a lot of indicators on my front panel. If I were to update them on my BD, my BD will be a little bit too large. I was thinking about updating the indicators in a subvi, but I would have to feed in all references of the indicators, which will required too many terminals. Is there a way to create a reference for the complete front panel of the main vi and feed it into a subiv and get all the references of the indicators based on just one reference of the main vi within the subvi?

I had to do something similar once. This is how I coded it. On my application there was a tab that contained indicators. The key for this to work is the label name for all your indicators had to start with "bol". You could do the same thing with buttons as btn etc.