i do not think there is a kit for it but if you are any good at wiring electronics a remote switch can be added to just about anything. the relays in these remote switches would be hooked up in parallel to your current in-out switch and to 12v power that should be available at your current switch. it would not effect the operation of the current switch. the first one would work but i like the one from ebay with the remote storage brackets.
wireless switch 1 or
wireless switch 2 the other remote in above post is expensive though
RV Intelligence JAS30