If your lucky and its over on the drivers side
and you have over head fan outlets over windshield,
access behind access panel for fan motor with four screws
holding panel you maybe ok.
If not I would make up a wire hook with #14 wire and carefully try to hook the wire out of exsisting hole.
If you do have the fans the wires are going to fall in your face when you open the wood access panel.
You can then very carefully push a thin fish towards the drivers side to access opening to be able to tie the wires that fell thru hole and get them back out thru the hole.
I think you will be in luck all my coachs had the over head fans.