An electrical connector assembly that includes an adjustment collar and a body having an interior volume. The collar defines a passage that is in communication with the interior volume of the body when the collar is engaged with the body. The collar can be rotated relative to the body and can also be fixed to the body with a locking member. The adjustment collar has a helical thread that engages an electrical connector. Wiring extending through the body can be conductively engaged with the electrical connector. The engagement between the collar and the body allows the rotational position of the electrical connector relative to the body to be easily adjusted and then fixed in place by rotation and the subsequent fixation of the adjustment collar. A cooperating electrical connector can be detachably engaged with the electrical connector. A coupling member can be used to secure the cooperating electrical connector.