Oh, I gotcha.
What I would do is plug a Y into the RX and leave it there. Then I would run a long enough extension out the wing root so that when I plug the wing in, the extension will be ready to plug into the Y. That would allow you to bury the servo connector in the wing, and heat shrink it.
Hope that made sense.
But if you want to mess with those things everytime you set your plane up, then by all means.....