Does the celing fan need an earth conection from inside the roof ?

Velcro strips attached to the inside of the metal on the roof and on the liner is where the other piece is attached. You need to make sure that you have a very good glue that can take the heat from summer sun on the car. A high quality contact cement would be good if you can avoid the solvent in the glue melting the plastic on the Velcro. If not you may be able to use epoxy.

not to much info, try to check wires in wall switch to see if loose or burnt migght need replace, if that is not it need to go where the wires are conected in the fan and celing, chech if loose or burnt, good luck

There are drain tubes in rear that need to be cleaned out, use compressed air.

some fans have a charcoal filter that needs replacing others are supposed to be vented out side by the roof or out the wall to see if the vent is going outside you will have to unmount the unit tak it down and check and see if it is conected to a duct in the celing or through the wall hope this helps

Home Depot has the best selection

Loose wire nuts, fell off? Damage needs to be better described

SOunds to me like you have a bad wiring connection in the fan unit, have someone check out all the connections, both between the fan and ceiling and the fan and light unit.

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i would suggest getting a price on the entire roof assembly from a dealer depending on age these roofs can be lminated togehter ang removing the skin car cause strustural damage to the camper roof it is common practice to stop the leak remove most of the wet wood and overlay what is left standing sounds bad but only way to fix cosmetcally if you need to soarce parts do a search for all right manufacuring they supply celing and metal for most camper manufacures

I'm pretty sure that home depot does sell remotes for that brand, although you may have to buy a new receiver to go with it. Otherwise try a lighting store near where you live. They seem to be able to order things like that.

im not familiar with this model but you will need a pole to give the blades clearance from the celing and electricl conections uyou sometimes get two poles but as long as you have plenty clearnce one should be ok