New rear shocks will only feature Auto-level, but new Dorman compressor has connections for both Air Suspension features...

[11bravo]

Installing a new Dorman compressor along with rear air shocks that only have one air connection, the leveling function. My question is about the extra air line coming off the compressor that will not be connected? I want to think that both lines will be closed until they are connected. Is that correct? If not, how do I close off the line that will now not be in use?