I am trying to refill my 94 Honda Accord with R134a and I bought the hose to connect to the low side. The connector does not want to snap in the fitting for some reason. I pulled back the connector like instructed but it does not click into the fitting. Am I doing something wrong here?

 

Disregard this, there was a rubber o-ring in the hose that was blocking it from locking securely, problem fixed.