Optional Installation File At Point
If you choose to have dired-x.el bind dired-x-find-file over find-file (see Find File At Point), then you will need to set dired-x-hands-off-my-keys. To do this, either set it before dired-x.el is loaded, or use M-x customize-variable, or call dired-x-bind-find-file after changing the value.
emacs-lisp
(with-eval-after-load 'dired
;; Bind dired-x-find-file.
(setq dired-x-hands-off-my-keys nil)
(require 'dired-x))