It varies, as the RV manufacturer installed it, not Ford. My Winnebago takes removing a bunch of nuts and screws. It's pretty easy, as my dash lifts open. Who made yours? Is your profile right, an Airstream? Maybe a Land Yacht? (I don't see an Xtera as listed in your profile.) Got some pictures?
But what is your problem? I saw you post about an ABS module, now a speedometer. Sounds like you're working on fixing something speed related. Speed sensors are a known problem on that vintage F53, checked that out?