it should be straigtforward.
it has what is called a circlip-which is like a circular piece of wire holding the base of the plastic connecter in place.
with a nose pliers-(do not know what you call it in the u.s).-it is a pair of pliers but with a pointed nose ,with which you can grasp the circlip and pull it off gently making sure you have a firm grip on it with the pliers during removal.
once the clip is off,then the connector should come off easily.
replacing the clip on refitting the connector -just push it into the groove at the base of the connector-job done.
hope this helps