You should be able to get the wiring diagram from Fleetwood for the coach. While they may not know the exact location, at least with the diagram you can get a bit closer, that has been my experience. So far they are 0-3 for having the right location documented for various fuses or electrical components, but with the diagram I was able to find what I was looking for within a few minutes.
2007 Fleetwood Excursion 40E
2007 Chev Classic CC LB D/A - Toad
2013 Jeep Sahara Unlimited - Backup Toad