This is perhaps quite simple, but I haven\'t found anything useful when googling. So here it goes :)
I use Emacs in daemon mode (emacs --daemon) and it\
emacs --daemon
Another hook that is run each time emacsclient is invoked is server-visit-hook, which is perhaps more appropriate than after-make-frame-functions.
server-visit-hook
after-make-frame-functions
(add-hook 'server-visit-hook (lambda () (keyboard-translate ?\C-j ?\C-c) (keyboard-translate ?\C-c ?\C-j)))