tranny question

i just put a tranny into my 95gpse and it has a connector on top for a vacuum line but my original tranny did not have it so i was wondering if anyone knew where it went. it is a 4t60e and i have the vacuum line that goes to the plenum but i do not know where this other one goes

if anyone has any ideas please let me know, i was thinking maybe it went to the vacuum storage canister in the fender but i am not too sure.