Yes folks it's true. Sometimes extension leads will become unplugged; the result, is a re-kitted aircraft. Fortunately, through the ingenuity of model engineering we have been blessed with these servo extension safety locks.
Plug in your extension and slide one of these locks into place until it clicks and voila; locked together. See pics above. The safety locks will fit most servo wires and extensions regardless of whether they are twisted or flat wire.
Comes in a pack of 10